Q: What is the negative version of the number 221,640,666?
A: -221,640,666
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:
| 221,640,664 | 221,640,665 | 221,640,667 | 221,640,668 |
| -221,640,664 | -221,640,665 | -221,640,667 | -221,640,668 |