Q: What is the negative version of the number 21,721,868?
A: -21,721,868
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 21,721,866 | 21,721,867 | 21,721,869 | 21,721,870 |
| -21,721,866 | -21,721,867 | -21,721,869 | -21,721,870 |