12220712 has 16 divisors (see below), whose sum is σ = 26187360. Its totient is φ = 5237424.

The previous prime is 12220699. The next prime is 12220717. The reversal of 12220712 is 21702221.

12220712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12220717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109058 + ... + 109169.

It is an arithmetic number, because the mean of its divisors is an integer number (1636710).

Almost surely, 2^12220712 is an apocalyptic number.

It is an amenable number.

12220712 is an abundant number, since it is smaller than the sum of its proper divisors (13966648).

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

12220712 is a wasteful number, since it uses less digits than its factorization.

12220712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218240 (or 218236 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 12220712 is about 3495.8134961694. The cubic root of 12220712 is about 230.3379530871.

Adding to 12220712 its reverse (21702221), we get a palindrome (33922933).

The spelling of 12220712 in words is "twelve million, two hundred twenty thousand, seven hundred twelve".