21 times 22 is 462. In symbols: 21 × 22 = 462, and 22 × 21 = 462 too.
21 × 22 means adding 21 to itself 22 times: that is 22 copies of 21, which add up to 462.
21, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, 252, ... (keep going to the 22th multiple). The 22th multiple of 21 is 462.
21 × 22 = 21 × 20 + 21 × 2 = 420 + 42 = 462.
Halve one number and double the other: 21 × 22 = 11 × 42 = 462.
462 ÷ 21 = 22
462 ÷ 22 = 21
462 is even. Prime factorization: 2 × 3 × 7 × 11.
| Multiplication | Answer |
|---|---|
| 20 × 22 | 440 |
| 22 × 22 | 484 |
| 21 × 21 | 441 |
| 21 × 23 | 483 |
| 21 × 24 | 504 |
| 20 × 21 | 420 |
| 22 × 23 | 506 |
| 19 × 22 | 418 |
Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.