One hundred twelve — emergency number

112 is the single emergency services number in the European Union, working in all 27 countries. Introduced in 1991. Also works in Russia and many other countries worldwide.

Copernicium (Cn) — the 112th element, a synthetic superheavy metal named after Nicolaus Copernicus. Synthesized in 1996. At room temperature it is predicted to be a gas.

Led Zeppelin concerts in the 1970s reached noise levels of 112 decibels — the loudness of a jet engine. This became the standard for rock shows of the era and forever changed ideas about the volume of live music.