12223912 has 32 divisors (see below), whose sum is σ = 23960520. Its totient is φ = 5840640.

The previous prime is 12223909. The next prime is 12223921. The reversal of 12223912 is 21932221.

It can be written as a sum of positive squares in 4 ways, for example, as 12068676 + 155236 = 3474^2 + 394^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17718 + ... + 18394.

Almost surely, 2^12223912 is an apocalyptic number.

It is an amenable number.

12223912 is a deficient number, since it is larger than the sum of its proper divisors (11736608).

12223912 is a wasteful number, since it uses less digits than its factorization.

12223912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 777 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 12223912 is about 3496.2711565323. The cubic root of 12223912 is about 230.3580560381.

It can be divided in two parts, 122 and 23912, that multiplied together give a square (2917264 = 1708²).

The spelling of 12223912 in words is "twelve million, two hundred twenty-three thousand, nine hundred twelve".