Fatto matematico: 2192 is the number of necklaces (that can't be turned over) possible with 15 beads, each being one of 2 colors.
Trivia: 2192 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: December 31st is the day in 1991 that all official Soviet Union institutions have ceased operations by this date and the Soviet Union is officially dissolved.