Names of 2001
| Nominal | 2001 |
| Cardinal | two thousand one |
| Ordinal | 2,001st |
| This number as US currency | two thousand one dollars |
| Is 2001 an odd number? | 2001 is an odd number |
| Is 2001 an even number? | 2001 is NOT an even number |
| Is 2001 a palindrome? | 2001 is NOT a palindrome number |
| Is 2001 a triangle number? | 2001 is NOT a triangle number |
2001 in other Bases
| Base 2 (Binary) | 111110100012 |
| Base 3 (Ternary) | 22020103 |
| Base 4 (Quaternary) | 1331014 |
| Base 5 (Quinary) | 310015 |
| Base 6 (Senary) | 131336 |
| Base 8 (Octal) | 37218 |
| Base 12 (Duodecimal) | 11A912 |
| Base 16 (Hexadecimal) | 7D116 |
| Base 20 (Vigesimal) | 50120 |
Primes and Factors tests for 2001
| Is 2001 a Prime Number? | 2001 is NOT a prime |
| Is 2001 a perfect number? | 2001 is NOT a perfect number |
| Is 2001 a Mersenne Prime? | 2001 is NOT a Mersenne prime |
| Is 2001 a Fermat Prime? | 2001 is NOT a Fermat prime |
| Is 2001 a Fibonacci Prime? | 2001 is NOT a Fibonacci prime |
| Is 2001 a Partition Prime? | 2001 is NOT a Partition prime |
| Is 2001 a Pell Prime? | 2001 is NOT a Pell prime |
| Prime Factors | Prime factors of 2001 |
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2001 in other Numerals
| 2001 in Roman Numeral | MMI |
| 2001 in Chinese Numeral | 貳仟壹 |
| 2001 in Egyptian Numeral | 𓆽𓏺 |
| 2001 in Babylonian Numeral |   |
Roots and stuff for 2001
| Is 2001 a square number? | 2001 is NOT a square number |
| Is 2001 a cube number? | 2001 is NOT a cube number |
| Square root of the number 2001 | 44.73253849269 |
| Cube root of the number 2001 | 12.601310017484 |
Recreational math for 2001
| Number 2001 reversed | 1002 |
| Sum of the digits | 3 |
| No of digits | 4 |