113123121213 has 8 divisors (see below), whose sum is σ = 150837878176. Its totient is φ = 75411889200.

The previous prime is 113123121173. The next prime is 113123121229. The reversal of 113123121213 is 312121321311.

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

It is not a de Polignac number, because 113123121213 - 2¹² = 113123117117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113123121213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113123121283) 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, 805423 + ... + 935388.

It is an arithmetic number, because the mean of its divisors is an integer number (18854734772).

Almost surely, 2^113123121213 is an apocalyptic number.

It is an amenable number.

113123121213 is a deficient number, since it is larger than the sum of its proper divisors (37714756963).

113123121213 is a wasteful number, since it uses less digits than its factorization.

113123121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762475.

The product of its digits is 216, while the sum is 21.

Adding to 113123121213 its reverse (312121321311), we get a palindrome (425244442524).

The spelling of 113123121213 in words is "one hundred thirteen billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred thirteen".