113311022172 has 12 divisors (see below), whose sum is σ = 264392385096. Its totient is φ = 37770340720.

The previous prime is 113311022129. The next prime is 113311022173. The reversal of 113311022172 is 271220113311.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113311022173) 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, 4721292579 + ... + 4721292602.

It is an arithmetic number, because the mean of its divisors is an integer number (22032698758).

Almost surely, 2^113311022172 is an apocalyptic number.

113311022172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113311022172 is an abundant number, since it is smaller than the sum of its proper divisors (151081362924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113311022172 is a wasteful number, since it uses less digits than its factorization.

113311022172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9442585188 (or 9442585186 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

Adding to 113311022172 its reverse (271220113311), we get a palindrome (384531135483).

The spelling of 113311022172 in words is "one hundred thirteen billion, three hundred eleven million, twenty-two thousand, one hundred seventy-two".