Il numero 321, trecentoventuno in Italiano, in Inglese si dice three hundred twenty-one.
Il numero ordinale 321° in inglese si dice three hundred twenty-first.
312: three hundred twelve
313: three hundred thirteen
314: three hundred fourteen
315: three hundred fifteen
316: three hundred sixteen
317: three hundred seventeen
318: three hundred eighteen
319: three hundred nineteen
320: three hundred twenty
322: three hundred twenty-two
323: three hundred twenty-three
324: three hundred twenty-four
325: three hundred twenty-five
326: three hundred twenty-six
327: three hundred twenty-seven
328: three hundred twenty-eight
329: three hundred twenty-nine
330: three hundred thirty