113121012013 has 8 divisors (see below), whose sum is σ = 116187256440. Its totient is φ = 110055237120.

The previous prime is 113121011989. The next prime is 113121012029. The reversal of 113121012013 is 310210121311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4668032329 + 108452979684 = 68323^2 + 329322^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 113121012013 - 2⁵ = 113121011981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121012713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401673 + ... + 622561.

It is an arithmetic number, because the mean of its divisors is an integer number (14523407055).

Almost surely, 2^113121012013 is an apocalyptic number.

It is an amenable number.

113121012013 is a deficient number, since it is larger than the sum of its proper divisors (3066244427).

113121012013 is a wasteful number, since it uses less digits than its factorization.

113121012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234767.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 113121012013 its reverse (310210121311), we get a palindrome (423331133324).

The spelling of 113121012013 in words is "one hundred thirteen billion, one hundred twenty-one million, twelve thousand, thirteen".