113212 has 24 divisors (see below), whose sum is σ = 225792. Its totient is φ = 49200.

The previous prime is 113209. The next prime is 113213. The reversal of 113212 is 212311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113213) 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, 1323 + ... + 1405.

It is an arithmetic number, because the mean of its divisors is an integer number (9408).

2¹¹³²¹² is an apocalyptic number.

It is an amenable number.

113212 is a deficient number, since it is larger than the sum of its proper divisors (112580).

113212 is a wasteful number, since it uses less digits than its factorization.

113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 127 counting only the distinct ones).

The product of its digits is 12, while the sum is 10.

The square root of 113212 is about 336.4699095016. The cubic root of 113212 is about 48.3760963858.

Adding to 113212 its reverse (212311), we get a palindrome (325523).

Subtracting 113212 from its reverse (212311), we obtain a palindrome (99099).

It can be divided in two parts, 113 and 212, that added together give a triangular number (325 = T₂₅).

The spelling of 113212 in words is "one hundred thirteen thousand, two hundred twelve".