100210002100 has 72 divisors (see below), whose sum is σ = 234283621208. Its totient is φ = 36984729600.

The previous prime is 100210002097. The next prime is 100210002133. The reversal of 100210002100 is 1200012001.

It can be written as a sum of positive squares in 12 ways, for example, as 85990870564 + 14219131536 = 293242^2 + 119244^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3262012 + ... + 3292588.

Almost surely, 2^100210002100 is an apocalyptic number.

100210002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100210002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117141810604).

100210002100 is an abundant number, since it is smaller than the sum of its proper divisors (134073619108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100210002100 is a wasteful number, since it uses less digits than its factorization.

100210002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33125 (or 33118 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 100210002100 its reverse (1200012001), we get a palindrome (101410014101).

Subtracting from 100210002100 its reverse (1200012001), we obtain a palindrome (99009990099).

The spelling of 100210002100 in words is "one hundred billion, two hundred ten million, two thousand, one hundred".