Q: What is the digital root of 21,100,013

 A: 8

Why is 8 the digital root of the number 21,100,013?

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 21,100,013?


Split the number up and add each digit together:


2 + 1 + 1 + 0 + 0 + 0 + 1 + 3 = 8


What is the digital root of number 21,100,013?

Answer: 8


More Examples

Number 21,100,01121,100,01221,100,01421,100,015
Digital Root 6791

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