12204172 has 6 divisors (see below), whose sum is σ = 21357308. Its totient is φ = 6102084.

The previous prime is 12204169. The next prime is 12204197. The reversal of 12204172 is 27140221.

It is a happy number.

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 as a sum of consecutive naturals, namely, 1525518 + ... + 1525525.

Almost surely, 2^12204172 is an apocalyptic number.

It is an amenable number.

12204172 is a deficient number, since it is larger than the sum of its proper divisors (9153136).

12204172 is a wasteful number, since it uses less digits than its factorization.

12204172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051047 (or 3051045 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12204172 is about 3493.4470083286. The cubic root of 12204172 is about 230.2339899734.

Adding to 12204172 its reverse (27140221), we get a palindrome (39344393).

The spelling of 12204172 in words is "twelve million, two hundred four thousand, one hundred seventy-two".