You are 123 years old if you were born on September 21, 1900.
You are 123 years 6 months, 1 week, and 1 day old or 1482 months old or 6,445 weeks old or 45,115 days old or 1,082,760 hours old or 64,965,600 minutes old or 3,897,936,000 seconds old You were born on a Friday.