1,001 in words
British English
one thousand and one
American English
one thousand one
One thousand and one in British English, one thousand one in American.
Quick reference
- In figures
- 1,001
- British English
- one thousand and one
- American English
- one thousand one (why they differ)
- Ordinal
- one thousand and first (1,001st)
- Roman numeral
- MI
- Place value
- 1 in the thousands column; 1 in the ones column
- Expanded form
- 1,000 + 1
- Standard form
- 1.001 × 10³
- Even or odd
- Odd
- Prime factors
- 7 × 11 × 13
Convert any other number, up to thirty-six digits.