Thousands with a two-digit final group
21,021 splits into 21 | 021. Its two-digit final group is written “twenty-one”.
21021 in words: twenty-one thousand twenty-one
21,021
In words
Twenty-one thousand twenty-one
Check another number
How 21,021 is built
Pattern: Thousands with a two-digit final group
21,021 splits into 21 | 021. Its two-digit final group is written “twenty-one”.
Digit and place-value table
| Digit | Position | Value | Value in words |
|---|---|---|---|
| 2 | ten-thousands | 20,000 | twenty thousand |
| 1 | thousands | 1,000 | one thousand |
| 0 | hundreds | 0 | not spoken |
| 2 | tens | 20 | twenty |
| 1 | ones | 1 | one |
Reading the number in groups
| Group | Digits | Reading |
|---|---|---|
| thousands | 21 | twenty-one thousand |
| final group | 021 | twenty-one |
Why 21,021 is written this way
Group boundary: 21 | 021
The comma boundary separates 21 from 021: “twenty-one thousand” is read before “twenty-one”.
Silent zero positions
The hundreds position contains zero. It preserves place value in the numeral but adds no spoken word.
Hyphenation
The spelling contains 2 hyphens. Each hyphen joins a tens word to a non-zero ones word inside the same two-digit group.
Number structure
- 21,021 has 5 digits and 2 place-value groups.
- 4 positions contribute a spoken value; 1 zero position is silent.
- Its thousands group is 21; its final three-digit group is 021.