Il numero 18021, diciottomilaventuno in Italiano, in Inglese si dice eighteen thousand twenty-one.
Il numero ordinale 18021° in inglese si dice eighteen thousand twenty-first.
18012: eighteen thousand twelve
18013: eighteen thousand thirteen
18014: eighteen thousand fourteen
18015: eighteen thousand fifteen
18016: eighteen thousand sixteen
18017: eighteen thousand seventeen
18018: eighteen thousand eighteen
18019: eighteen thousand nineteen
18020: eighteen thousand twenty
18022: eighteen thousand twenty-two
18023: eighteen thousand twenty-three
18024: eighteen thousand twenty-four
18025: eighteen thousand twenty-five
18026: eighteen thousand twenty-six
18027: eighteen thousand twenty-seven
18028: eighteen thousand twenty-eight
18029: eighteen thousand twenty-nine
18030: eighteen thousand thirty