12972222 has 24 divisors (see below), whose sum is σ = 29076840. Its totient is φ = 4174800.

The previous prime is 12972217. The next prime is 12972233. The reversal of 12972222 is 22227921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11904 + ... + 12947.

It is an arithmetic number, because the mean of its divisors is an integer number (1211535).

Almost surely, 2^12972222 is an apocalyptic number.

12972222 is an abundant number, since it is smaller than the sum of its proper divisors (16104618).

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

12972222 is a wasteful number, since it uses less digits than its factorization.

12972222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24888 (or 24885 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 12972222 is about 3601.6970999794. The cubic root of 12972222 is about 234.9658740245.

The spelling of 12972222 in words is "twelve million, nine hundred seventy-two thousand, two hundred twenty-two".