210111102122100 has 72 divisors (see below), whose sum is σ = 607931690402400. Its totient is φ = 56028683921280.

The previous prime is 210111102122093. The next prime is 210111102122149. The reversal of 210111102122100 is 1221201111012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 210111102122100.

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, 12043854 + ... + 23775546.

Almost surely, 2^{210111102122100} is an apocalyptic number.

210111102122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210111102122100 is an abundant number, since it is smaller than the sum of its proper divisors (397820588280300).

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

210111102122100 is a wasteful number, since it uses less digits than its factorization.

210111102122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11791409 (or 11791402 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210111102122100 its reverse (1221201111012), we get a palindrome (211332303233112).

The spelling of 210111102122100 in words is "two hundred ten trillion, one hundred eleven billion, one hundred two million, one hundred twenty-two thousand, one hundred".