12213472 has 24 divisors (see below), whose sum is σ = 24456600. Its totient is φ = 6002304.

The previous prime is 12213469. The next prime is 12213493. The reversal of 12213472 is 27431221.

12213472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347 + ... + 5122.

It is an arithmetic number, because the mean of its divisors is an integer number (1019025).

Almost surely, 2^12213472 is an apocalyptic number.

It is an amenable number.

12213472 is an abundant number, since it is smaller than the sum of its proper divisors (12243128).

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

12213472 is an equidigital number, since it uses as much as digits as its factorization.

12213472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6538 (or 6530 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 12213472 is about 3494.7778184028. Note that the first 3 decimals coincide. The cubic root of 12213472 is about 230.2924572051.

Adding to 12213472 its reverse (27431221), we get a palindrome (39644693).

The spelling of 12213472 in words is "twelve million, two hundred thirteen thousand, four hundred seventy-two".