Sum of Digits of 121
ANSWER : 4
The sum of the digits in the number 121 is: 1 + 2 + 1 = 4
How to Calculate the Digit Sum of 121?
To find the sum of digits of a number, simply break it into individual digits and add them. For 121:
1 + 2 + 1 = 4
The digits of 121 are: 1, 2, 1.
Their sum is: 4
Step-by-Step Digit Sum of 121
We split the number 121 into its individual digits: 1 + 2 + 1 = 4
Digit Positions in 121
| Position | Digit |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
Length of 121
The number 121 has 3 digits.
Is 4 a Prime Number?
No, 4 is not a prime number.
Digit Sums in Other Bases
- Binary: 1111001 → 5
- Octal: 171 → 9
- Hexadecimal: 79 → 16