202100012120 has 128 divisors (see below), whose sum is σ = 465085670400. Its totient is φ = 79024129536.

The previous prime is 202100012111. The next prime is 202100012129. The reversal of 202100012120 is 21210001202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (202100012111) and next prime (202100012129).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100012129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158260922 + ... + 158262198.

It is an arithmetic number, because the mean of its divisors is an integer number (3633481800).

Almost surely, 2^202100012120 is an apocalyptic number.

202100012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202100012120 is an abundant number, since it is smaller than the sum of its proper divisors (262985658280).

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

202100012120 is a wasteful number, since it uses less digits than its factorization.

202100012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202100012120 its reverse (21210001202), we get a palindrome (223310013322).

The spelling of 202100012120 in words is "two hundred two billion, one hundred million, twelve thousand, one hundred twenty".