12222166564 has 12 divisors (see below), whose sum is σ = 21557208064. Its totient is φ = 6062964264.

The previous prime is 12222166531. The next prime is 12222166573. The reversal of 12222166564 is 46566122221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12029184 + ... + 12030199.

Almost surely, 2^12222166564 is an apocalyptic number.

It is an amenable number.

12222166564 is a deficient number, since it is larger than the sum of its proper divisors (9335041500).

12222166564 is a wasteful number, since it uses less digits than its factorization.

12222166564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24059514 (or 24059512 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

Adding to 12222166564 its reverse (46566122221), we get a palindrome (58788288785).

The spelling of 12222166564 in words is "twelve billion, two hundred twenty-two million, one hundred sixty-six thousand, five hundred sixty-four".