12220472 has 16 divisors (see below), whose sum is σ = 24996600. Its totient is φ = 5554720.

The previous prime is 12220457. The next prime is 12220489. The reversal of 12220472 is 27402221.

It is a happy number.

12220472 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, 69347 + ... + 69522.

Almost surely, 2^12220472 is an apocalyptic number.

It is an amenable number.

12220472 is an abundant number, since it is smaller than the sum of its proper divisors (12776128).

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

12220472 is a wasteful number, since it uses less digits than its factorization.

12220472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138886 (or 138882 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 12220472 is about 3495.7791692268. The cubic root of 12220472 is about 230.3364452243.

Adding to 12220472 its reverse (27402221), we get a palindrome (39622693).

The spelling of 12220472 in words is "twelve million, two hundred twenty thousand, four hundred seventy-two".