222 (number): Difference between revisions
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*"222", a song by [[Paul McCartney]] on the 2-CD edition of his 2007 studio album ''[[Memory Almost Full]]''. |
*"222", a song by [[Paul McCartney]] on the 2-CD edition of his 2007 studio album ''[[Memory Almost Full]]''. |
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*[[A-222 Bereg]], a Russian self-propelled 130 mm coastal defence gun |
*[[A-222 Bereg]], a Russian self-propelled 130 mm coastal defence gun |
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*"222 Song 1 (Galactic Grooves)", a song by [[222 Glorify God]] on www.222glorify.com |
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*"222 Song 2 (Desiremaykissmegoodbye)", a song by [[222 Glorify God]] on www.222glorify.com |
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*"222 Interlude (The Year 2020)", a song by [[222 Glorify God]] on www.222glorify.com |
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*"222 Glorify God" logo by 222 Glorify God Publishing Company |
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==References== |
==References== |
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Revision as of 02:15, 24 February 2013
| Template:Numbers 0-1000 | |
| Cardinal | Two hundred [and] twenty-two |
| Ordinal | 222nd |
| Factorization | |
| Roman numeral | CCXXII |
| Binary | 11011110 |
| Hexadecimal | DE |
222 (two hundred [and] twenty-two) is the natural number following 221 and preceding 223.
It is a decimal repdigit[1] and a strobogrammatic number (meaning that it looks the same turned upside down on a calculator display).[2] It is one of the numbers whose digit sum in decimal is the same as it is in binary.[3]
222 is a noncototient, meaning that it cannot be written in the form n − φ(n) where φ is Euler's totient function counting the number of values that are smaller than n and relatively prime to it.[4]
There are exactly 222 distinct ways of assigning a meet and join operation to a set of ten unlabeled elements in order to give them the structure of a lattice,[5] and exactly 222 different six-edge polysticks.[6]
See also
- The years CE 222 or 222 BCE.
- Room 222 (TV show)
- Bell 222 (helicopter)
- SdKfz 222, a WWII German reconnaissance vehicle
- The 222s, a Montreal punk band which took its name from a code name for co-codaprin
- 222, a comedy album by Patton Oswalt
- "222", a song by Paul McCartney on the 2-CD edition of his 2007 studio album Memory Almost Full.
- A-222 Bereg, a Russian self-propelled 130 mm coastal defence gun
- "222 Song 1 (Galactic Grooves)", a song by 222 Glorify God on www.222glorify.com
- "222 Song 2 (Desiremaykissmegoodbye)", a song by 222 Glorify God on www.222glorify.com
- "222 Interlude (The Year 2020)", a song by 222 Glorify God on www.222glorify.com
- "222 Glorify God" logo by 222 Glorify God Publishing Company
References
- ^ Sloane, N. J. A. (ed.). "Sequence A010785 (Repdigit numbers, or numbers with repeated digits)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A018846 (Strobogrammatic numbers: numbers that are the same upside down (using calculator-style numerals))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A037308 (Numbers n such that (sum of base 2 digits of n) = (sum of base 10 digits of n))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A005278 (Noncototients: n such that x-phi(x) = n has no solution)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A006966 (Number of lattices on n unlabeled nodes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A019988 (Number of ways of embedding a connected graph with n edges in the square lattice)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.