You are 123 years old if you were born on May 21, 1900.
You are 123 years 10 months, 4 weeks, and 1 day old or 1487 months old or 6,465 weeks old or 45,259 days old or 1,086,216 hours old or 65,172,960 minutes old or 3,910,377,600 seconds old You were born on a Monday.