You are 123 years old if you were born on December 21, 1900.
You are 123 years 4 months and 5 days old or 1480 months old or 6,436 weeks old or 45,052 days old or 1,081,248 hours old or 64,874,880 minutes old or 3,892,492,800 seconds old You were born on a Friday.