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**112** (**one hundred [and] twelve**) is the natural number following 111 and preceding 113.

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Cardinal | one hundred twelve | |||

Ordinal | 112th (one hundred twelfth) | |||

Factorization | 2^{4} × 7 | |||

Divisors | 1, 2, 4, 7, 8, 14, 16, 28, 56, 112 | |||

Greek numeral | ΡΙΒ´ | |||

Roman numeral | CXII | |||

Binary | 1110000_{2} | |||

Ternary | 11011_{3} | |||

Octal | 160_{8} | |||

Duodecimal | 94_{12} | |||

Hexadecimal | 70_{16} |

112 is an abundant number, a heptagonal number,^{[1]} and a Harshad number.^{[2]} It is also the sum of six consecutive primes (11 + 13 + 17 + 19 + 23 + 29).

112 is the number of connected graphs on 6 unlabeled nodes.^{[3]} In all compositions of 6, the number number of parts is 112.

112 is the side of the smallest square that can be tiled with distinct integer-sided squares.

- The atomic number of the element copernicium (formerly called ununbium).

112 (emergency telephone number), used throughout the European Union, Russia, India and various other countries

- 112 is the number of pounds in a British long hundredweight
- 112 is the section of the criminal code dealing with lèse majesté in Thailand
- 112 is the number of surat al-Ikhlas in the Qur'an
- The number of sons of Iora in the Census of men of Israel upon return from exile (Bible, Ezra 2:18)

**^**"Sloane's A000566 : Heptagonal numbers".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation. Retrieved 2016-05-26.**^**"Sloane's A005349 : Niven (or Harshad) numbers".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation. Retrieved 2016-05-26.**^**"Sloane's A001349 : Number of connected graphs with n nodes".*The On-Line Encyclopedia of Integer Sequences*. OEIS Foundation. Retrieved 2021-12-19.

- Wells, D.
*The Penguin Dictionary of Curious and Interesting Numbers*London: Penguin Group. (1987): 134