Q: What is the digital root of 13,121,100

 A: 9

Why is 9 the digital root of the number 13,121,100?

The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.

How do you calculate the digital root of 13,121,100?


Split the number up and add each digit together:


1 + 3 + 1 + 2 + 1 + 1 + 0 + 0 = 9


What is the digital root of number 13,121,100?

Answer: 9


More Examples

Number 13,121,09813,121,09913,121,10113,121,102
Digital Root 7812

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