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 an unremarkable number.
Data storica: December 31st is the day in 535 that Byzantine General Belisarius completes the conquest of Sicily, defeating the Ostrogothic garrison of Syracuse, and ending his consulship for the year.