Il numero 201991, duecentounomilanovecentonovantuno in Italiano, in Inglese si dice two hundred one thousand nine hundred ninety-one.
Il numero ordinale 201991° in inglese si dice two hundred one thousand nine hundred ninety-first.
201982: two hundred one thousand nine hundred eighty-two
201983: two hundred one thousand nine hundred eighty-three
201984: two hundred one thousand nine hundred eighty-four
201985: two hundred one thousand nine hundred eighty-five
201986: two hundred one thousand nine hundred eighty-six
201987: two hundred one thousand nine hundred eighty-seven
201988: two hundred one thousand nine hundred eighty-eight
201989: two hundred one thousand nine hundred eighty-nine
201990: two hundred one thousand nine hundred ninety
201992: two hundred one thousand nine hundred ninety-two
201993: two hundred one thousand nine hundred ninety-three
201994: two hundred one thousand nine hundred ninety-four
201995: two hundred one thousand nine hundred ninety-five
201996: two hundred one thousand nine hundred ninety-six
201997: two hundred one thousand nine hundred ninety-seven
201998: two hundred one thousand nine hundred ninety-eight
201999: two hundred one thousand nine hundred ninety-nine
202000: two hundred two thousand