12212164 has 6 divisors (see below), whose sum is σ = 21371294. Its totient is φ = 6106080.

The previous prime is 12212159. The next prime is 12212173. The reversal of 12212164 is 46121221.

It can be written as a sum of positive squares in only one way, i.e., 9253764 + 2958400 = 3042^2 + 1720^2 .

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 as a sum of consecutive naturals, namely, 1526517 + ... + 1526524.

Almost surely, 2^12212164 is an apocalyptic number.

It is an amenable number.

12212164 is a deficient number, since it is larger than the sum of its proper divisors (9159130).

12212164 is a wasteful number, since it uses less digits than its factorization.

12212164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053045 (or 3053043 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 12212164 is about 3494.5906770321. The cubic root of 12212164 is about 230.2842358659.

Adding to 12212164 its reverse (46121221), we get a palindrome (58333385).

The spelling of 12212164 in words is "twelve million, two hundred twelve thousand, one hundred sixty-four".