Q: What is the negative version of the number 21,091,009?
A: -21,091,009
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:
| 21,091,007 | 21,091,008 | 21,091,010 | 21,091,011 |
| -21,091,007 | -21,091,008 | -21,091,010 | -21,091,011 |