Il numero 621, seicentoventuno in Italiano, in Inglese si dice six hundred twenty-one.
Il numero ordinale 621° in inglese si dice six hundred twenty-first.
612: six hundred twelve
613: six hundred thirteen
614: six hundred fourteen
615: six hundred fifteen
616: six hundred sixteen
617: six hundred seventeen
618: six hundred eighteen
619: six hundred nineteen
620: six hundred twenty
622: six hundred twenty-two
623: six hundred twenty-three
624: six hundred twenty-four
625: six hundred twenty-five
626: six hundred twenty-six
627: six hundred twenty-seven
628: six hundred twenty-eight
629: six hundred twenty-nine
630: six hundred thirty