General fact: 112 is the number on mobile phones implementing the GSM standard, where it redirects to the country-specific emergency number.
Mathematical fact: 112 is in base 10 both a Harshad number.
Trivia: 112 is the atomic number of the element copernicium (formerly called ununbium).
Historical date: April 21st is the day in 1922 that the first Aggie Muster is held as a remembrance for fellow Texas A&M graduates who had died in the previous year.