12205164 has 12 divisors (see below), whose sum is σ = 28478744. Its totient is φ = 4068384.

The previous prime is 12205159. The next prime is 12205177. The reversal of 12205164 is 46150221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12205164.

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 3 ways as a sum of consecutive naturals, for example, 508537 + ... + 508560.

Almost surely, 2^12205164 is an apocalyptic number.

It is an amenable number.

12205164 is an abundant number, since it is smaller than the sum of its proper divisors (16273580).

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

12205164 is a wasteful number, since it uses less digits than its factorization.

12205164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017104 (or 1017102 counting only the distinct ones).

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

The square root of 12205164 is about 3493.5889855563. The cubic root of 12205164 is about 230.2402278930.

Adding to 12205164 its reverse (46150221), we get a palindrome (58355385).

The spelling of 12205164 in words is "twelve million, two hundred five thousand, one hundred sixty-four".