Il numero 2001, duemilauno in Italiano, in Inglese si dice two thousand one.
Il numero ordinale 2001° in inglese si dice two thousand first.
1992: one thousand nine hundred ninety-two
1993: one thousand nine hundred ninety-three
1994: one thousand nine hundred ninety-four
1995: one thousand nine hundred ninety-five
1996: one thousand nine hundred ninety-six
1997: one thousand nine hundred ninety-seven
1998: one thousand nine hundred ninety-eight
1999: one thousand nine hundred ninety-nine
2000: two thousand
2002: two thousand two
2003: two thousand three
2004: two thousand four
2005: two thousand five
2006: two thousand six
2007: two thousand seven
2008: two thousand eight
2009: two thousand nine
2010: two thousand ten