12222564 has 24 divisors (see below), whose sum is σ = 28882560. Its totient is φ = 4022304.

The previous prime is 12222559. The next prime is 12222571. The reversal of 12222564 is 46522221.

It is a happy number.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5499 + ... + 7394.

It is an arithmetic number, because the mean of its divisors is an integer number (1203440).

Almost surely, 2^12222564 is an apocalyptic number.

It is an amenable number.

12222564 is an abundant number, since it is smaller than the sum of its proper divisors (16659996).

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

12222564 is a wasteful number, since it uses less digits than its factorization.

12222564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12979 (or 12977 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 12222564 is about 3496.0783744075. The cubic root of 12222564 is about 230.3495880977.

Adding to 12222564 its reverse (46522221), we get a palindrome (58744785).

The spelling of 12222564 in words is "twelve million, two hundred twenty-two thousand, five hundred sixty-four".