Hecho matemático: 4222 is the number of 13-hexes with bilateral symmetry.
Trivia: 4222 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: July 23rd is the day in 1992 that a Vatican commission, led by Joseph Ratzinger, establishes that it is necessary to limit rights of homosexual people and non-married couples.