112 (number)

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

In mathematics

112 is an abundant number, a heptagonal number,^[1] and a Harshad number.^[2] It is also the sum of six consecutive primes ().

In science

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

In telephony

112 is an emergency telephone number:

• throughout the European Union – in some cases, alongside other, country-specific emergency numbers.
• in various other countries.
• on mobile phones implementing the GSM standard, where it redirects to the country-specific emergency number.

In other fields

One hundred [and] twelve is also:

• 112 is the number of pounds in a British long hundredweight.^[3]
• The number of surat al-Ikhlas in the Qur'an

See also

• List of highways numbered 112
• Persons living to the age of 112

References

1. ↑ "Sloane's A000566 : Heptagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26. 
2. ↑ "Sloane's A005349 : Niven (or Harshad) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26. 
3. ↑ Paul Pasles, Benjamin Franklin's numbers: an unsung mathematical odyssey. Princeton: Princeton University Press (2008): 37

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