12443212 has 6 divisors (see below), whose sum is σ = 21775628. Its totient is φ = 6221604.

The previous prime is 12443191. The next prime is 12443219. The reversal of 12443212 is 21234421.

It is a self number, because there is not a number n which added to its sum of digits gives 12443212.

It is not an unprimeable number, because it can be changed into a prime (12443219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555398 + ... + 1555405.

Almost surely, 2^12443212 is an apocalyptic number.

It is an amenable number.

12443212 is a deficient number, since it is larger than the sum of its proper divisors (9332416).

12443212 is a wasteful number, since it uses less digits than its factorization.

12443212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110807 (or 3110805 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 12443212 is about 3527.4937278470. The cubic root of 12443212 is about 231.7274593892.

Adding to 12443212 its reverse (21234421), we get a palindrome (33677633).

The spelling of 12443212 in words is "twelve million, four hundred forty-three thousand, two hundred twelve".