111211012013 has 16 divisors (see below), whose sum is σ = 115332940800. Its totient is φ = 107183784240.

The previous prime is 111211012001. The next prime is 111211012057. The reversal of 111211012013 is 310210112111.

It is a cyclic number.

It is not a de Polignac number, because 111211012013 - 2²⁰ = 111209963437 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 (111211062013) 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, 554828 + ... + 728186.

It is an arithmetic number, because the mean of its divisors is an integer number (7208308800).

Almost surely, 2^111211012013 is an apocalyptic number.

It is an amenable number.

111211012013 is a deficient number, since it is larger than the sum of its proper divisors (4121928787).

111211012013 is a wasteful number, since it uses less digits than its factorization.

111211012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173632.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 111211012013 its reverse (310210112111), we get a palindrome (421421124124).

The spelling of 111211012013 in words is "one hundred eleven billion, two hundred eleven million, twelve thousand, thirteen".