21120100122200 has 48 divisors (see below), whose sum is σ = 49590413354160. Its totient is φ = 8364396080000.

The previous prime is 21120100122197. The next prime is 21120100122217. The reversal of 21120100122200 is 222100102112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 522754556 + ... + 522794955.

It is an arithmetic number, because the mean of its divisors is an integer number (1033133611545).

Almost surely, 2^{21120100122200} is an apocalyptic number.

21120100122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120100122200 is an abundant number, since it is smaller than the sum of its proper divisors (28470313231960).

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

21120100122200 is a wasteful number, since it uses less digits than its factorization.

21120100122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045549628 (or 1045549619 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21120100122200 its reverse (222100102112), we get a palindrome (21342200224312).

The spelling of 21120100122200 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, one hundred twenty-two thousand, two hundred".