111121122013 has 64 divisors (see below), whose sum is σ = 139564892160. Its totient is φ = 87175756800.

The previous prime is 111121122001. The next prime is 111121122067. The reversal of 111121122013 is 310221121111.

It is a happy number.

It is not a de Polignac number, because 111121122013 - 2⁵ = 111121121981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121122113) 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 63 ways as a sum of consecutive naturals, for example, 14262523 + ... + 14270311.

It is an arithmetic number, because the mean of its divisors is an integer number (2180701440).

Almost surely, 2^111121122013 is an apocalyptic number.

It is an amenable number.

111121122013 is a deficient number, since it is larger than the sum of its proper divisors (28443770147).

111121122013 is a wasteful number, since it uses less digits than its factorization.

111121122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111121122013 its reverse (310221121111), we get a palindrome (421342243124).

The spelling of 111121122013 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred twenty-two thousand, thirteen".