111010123013 has 4 divisors (see below), whose sum is σ = 111205220460. Its totient is φ = 110815025568.

The previous prime is 111010122991. The next prime is 111010123043. The reversal of 111010123013 is 310321010111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51138395044 + 59871727969 = 226138^2 + 244687^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010123013 - 2²⁰ = 111009074437 is a prime.

It is a super-2 number, since 2×111010123013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010123043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97547870 + ... + 97549007.

It is an arithmetic number, because the mean of its divisors is an integer number (27801305115).

Almost surely, 2^111010123013 is an apocalyptic number.

It is an amenable number.

111010123013 is a deficient number, since it is larger than the sum of its proper divisors (195097447).

111010123013 is an equidigital number, since it uses as much as digits as its factorization.

111010123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195097446.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 111010123013 its reverse (310321010111), we get a palindrome (421331133124).

The spelling of 111010123013 in words is "one hundred eleven billion, ten million, one hundred twenty-three thousand, thirteen".