Q: What is the negative version of the number 421,155,221?
A: -421,155,221
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:
| 421,155,219 | 421,155,220 | 421,155,222 | 421,155,223 |
| -421,155,219 | -421,155,220 | -421,155,222 | -421,155,223 |