12216264 has 32 divisors (see below), whose sum is σ = 30637440. Its totient is φ = 4059200.

The previous prime is 12216247. The next prime is 12216283. The reversal of 12216264 is 46261221.

It is a super-2 number, since 2×12216264² = 298474212235392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

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, 9754 + ... + 10934.

It is an arithmetic number, because the mean of its divisors is an integer number (957420).

Almost surely, 2^12216264 is an apocalyptic number.

It is an amenable number.

12216264 is an abundant number, since it is smaller than the sum of its proper divisors (18421176).

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

12216264 is a wasteful number, since it uses less digits than its factorization.

12216264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621 (or 1617 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 12216264 is about 3495.1772487243. The cubic root of 12216264 is about 230.3100041552.

Adding to 12216264 its reverse (46261221), we get a palindrome (58477485).

The spelling of 12216264 in words is "twelve million, two hundred sixteen thousand, two hundred sixty-four".