111102112000021 has 16 divisors (see below), whose sum is σ = 113816177798400. Its totient is φ = 108417293899200.

The previous prime is 111102111999881. The next prime is 111102112000043. The reversal of 111102112000021 is 120000211201111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111102112000021 - 2⁹ = 111102111999509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111102111999965 and 111102112000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102112000051) 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, 27764340 + ... + 31512898.

It is an arithmetic number, because the mean of its divisors is an integer number (7113511112400).

Almost surely, 2^{111102112000021} is an apocalyptic number.

It is an amenable number.

111102112000021 is a deficient number, since it is larger than the sum of its proper divisors (2714065798379).

111102112000021 is a wasteful number, since it uses less digits than its factorization.

111102112000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752460.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111102112000021 its reverse (120000211201111), we get a palindrome (231102323201132).

The spelling of 111102112000021 in words is "one hundred eleven trillion, one hundred two billion, one hundred twelve million, twenty-one", and thus it is an aban number.