210100000100 has 72 divisors (see below), whose sum is σ = 457152880968. Its totient is φ = 83812556800.

The previous prime is 210100000093. The next prime is 210100000157. The reversal of 210100000100 is 1000001012.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 177315103744 + 32784896356 = 421088^2 + 181066^2 .

It is a Harshad number since it is a multiple of its sum of digits (5).

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, 72521852 + ... + 72524748.

It is an arithmetic number, because the mean of its divisors is an integer number (6349345569).

Almost surely, 2^210100000100 is an apocalyptic number.

210100000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210100000100 is an abundant number, since it is smaller than the sum of its proper divisors (247052880868).

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

210100000100 is a wasteful number, since it uses less digits than its factorization.

210100000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625 (or 4618 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 210100000100 its reverse (1000001012), we get a palindrome (211100001112).

The spelling of 210100000100 in words is "two hundred ten billion, one hundred million, one hundred", and thus it is an aban number.