113123032221 has 16 divisors (see below), whose sum is σ = 159804360000. Its totient is φ = 70934155008.

The previous prime is 113123032163. The next prime is 113123032237. The reversal of 113123032221 is 122230321311.

It is a de Polignac number, because none of the positive numbers 2^k-113123032221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113123032241) 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, 621846 + ... + 782903.

It is an arithmetic number, because the mean of its divisors is an integer number (9987772500).

Almost surely, 2^113123032221 is an apocalyptic number.

It is an amenable number.

113123032221 is a deficient number, since it is larger than the sum of its proper divisors (46681327779).

113123032221 is a wasteful number, since it uses less digits than its factorization.

113123032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406348.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 113123032221 its reverse (122230321311), we get a palindrome (235353353532).

The spelling of 113123032221 in words is "one hundred thirteen billion, one hundred twenty-three million, thirty-two thousand, two hundred twenty-one".