12252216 has 32 divisors (see below), whose sum is σ = 31136400. Its totient is φ = 4016640.

The previous prime is 12252197. The next prime is 12252259. The reversal of 12252216 is 61225221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12252192 and 12252201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2721 + ... + 5648.

Almost surely, 2^12252216 is an apocalyptic number.

It is an amenable number.

12252216 is an abundant number, since it is smaller than the sum of its proper divisors (18884184).

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

12252216 is a wasteful number, since it uses less digits than its factorization.

12252216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8439 (or 8435 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 12252216 is about 3500.3165571131. The cubic root of 12252216 is about 230.5357140734.

Adding to 12252216 its reverse (61225221), we get a palindrome (73477437).

The spelling of 12252216 in words is "twelve million, two hundred fifty-two thousand, two hundred sixteen".