210122102100 has 72 divisors (see below), whose sum is σ = 611979594688. Its totient is φ = 55661472000.

The previous prime is 210122102051. The next prime is 210122102119. The reversal of 210122102100 is 1201221012.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 2273929 + ... + 2364528.

Almost surely, 2^210122102100 is an apocalyptic number.

210122102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210122102100 is an abundant number, since it is smaller than the sum of its proper divisors (401857492588).

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

210122102100 is a wasteful number, since it uses less digits than its factorization.

210122102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638625 (or 4638618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210122102100 its reverse (1201221012), we get a palindrome (211323323112).

The spelling of 210122102100 in words is "two hundred ten billion, one hundred twenty-two million, one hundred two thousand, one hundred".