113112231322221 has 32 divisors (see below), whose sum is σ = 182226382231680. Its totient is φ = 69054207982848.

The previous prime is 113112231322217. The next prime is 113112231322303. The reversal of 113112231322221 is 122223132211311.

113112231322221 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 122 + 313 + 2 + 2 + 221 = 666.

It is not a de Polignac number, because 113112231322221 - 2² = 113112231322217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113112231322021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3330143511 + ... + 3330177476.

It is an arithmetic number, because the mean of its divisors is an integer number (5694574444740).

Almost surely, 2^{113112231322221} is an apocalyptic number.

It is an amenable number.

113112231322221 is a deficient number, since it is larger than the sum of its proper divisors (69114150909459).

113112231322221 is a wasteful number, since it uses less digits than its factorization.

113112231322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660321050 (or 6660321044 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

Adding to 113112231322221 its reverse (122223132211311), we get a palindrome (235335363533532).

The spelling of 113112231322221 in words is "one hundred thirteen trillion, one hundred twelve billion, two hundred thirty-one million, three hundred twenty-two thousand, two hundred twenty-one".