112021000021 has 16 divisors (see below), whose sum is σ = 128992993920. Its totient is φ = 95291631360.

The previous prime is 112021000001. The next prime is 112021000027. The reversal of 112021000021 is 120000120211.

It is a cyclic number.

It is not a de Polignac number, because 112021000021 - 2⁵ = 112020999989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112020999971 and 112021000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112021000027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4147641 + ... + 4174561.

It is an arithmetic number, because the mean of its divisors is an integer number (8062062120).

Almost surely, 2^112021000021 is an apocalyptic number.

It is an amenable number.

112021000021 is a deficient number, since it is larger than the sum of its proper divisors (16971993899).

112021000021 is a wasteful number, since it uses less digits than its factorization.

112021000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31404.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 112021000021 its reverse (120000120211), we get a palindrome (232021120232).

The spelling of 112021000021 in words is "one hundred twelve billion, twenty-one million, twenty-one", and thus it is an aban number.