113172212 has 24 divisors (see below), whose sum is σ = 200866176. Its totient is φ = 55787648.

The previous prime is 113172211. The next prime is 113172221. The reversal of 113172212 is 212271311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113172211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102053 + ... + 103155.

It is an arithmetic number, because the mean of its divisors is an integer number (8369424).

Almost surely, 2^113172212 is an apocalyptic number.

It is an amenable number.

113172212 is a deficient number, since it is larger than the sum of its proper divisors (87693964).

113172212 is a wasteful number, since it uses less digits than its factorization.

113172212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447 (or 1445 counting only the distinct ones).

The product of its digits is 168, while the sum is 20.

The square root of 113172212 is about 10638.2429000282. The cubic root of 113172212 is about 483.7042851302.

Subtracting 113172212 from its reverse (212271311), we obtain a palindrome (99099099).

The spelling of 113172212 in words is "one hundred thirteen million, one hundred seventy-two thousand, two hundred twelve".