12213232 has 40 divisors (see below), whose sum is σ = 24552000. Its totient is φ = 5882112.

The previous prime is 12213221. The next prime is 12213241. The reversal of 12213232 is 23231221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81894 + ... + 82042.

It is an arithmetic number, because the mean of its divisors is an integer number (613800).

Almost surely, 2^12213232 is an apocalyptic number.

It is an amenable number.

12213232 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12213232 is a wasteful number, since it uses less digits than its factorization.

12213232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 307 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 12213232 is about 3494.7434812873. The cubic root of 12213232 is about 230.2909487464.

Adding to 12213232 its reverse (23231221), we get a palindrome (35444453).

The spelling of 12213232 in words is "twelve million, two hundred thirteen thousand, two hundred thirty-two".