111113112021 has 8 divisors (see below), whose sum is σ = 156865569984. Its totient is φ = 69718031040.

The previous prime is 111113112001. The next prime is 111113112139. The reversal of 111113112021 is 120211311111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111113112021 - 2¹⁸ = 111112849877 is a prime.

It is a super-2 number, since 2×111113112021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111113112001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089344185 + ... + 1089344286.

It is an arithmetic number, because the mean of its divisors is an integer number (19608196248).

Almost surely, 2^111113112021 is an apocalyptic number.

It is an amenable number.

111113112021 is a deficient number, since it is larger than the sum of its proper divisors (45752457963).

111113112021 is a wasteful number, since it uses less digits than its factorization.

111113112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178688491.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 111113112021 its reverse (120211311111), we get a palindrome (231324423132).

The spelling of 111113112021 in words is "one hundred eleven billion, one hundred thirteen million, one hundred twelve thousand, twenty-one".