12201564 has 24 divisors (see below), whose sum is σ = 29240848. Its totient is φ = 3957120.

The previous prime is 12201557. The next prime is 12201583. The reversal of 12201564 is 46510221.

It is a self number, because there is not a number n which added to its sum of digits gives 12201564.

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, 13297 + ... + 14184.

Almost surely, 2^12201564 is an apocalyptic number.

It is an amenable number.

12201564 is an abundant number, since it is smaller than the sum of its proper divisors (17039284).

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

12201564 is a wasteful number, since it uses less digits than its factorization.

12201564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27525 (or 27523 counting only the distinct ones).

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

The square root of 12201564 is about 3493.0737180884. The cubic root of 12201564 is about 230.2175886690.

Adding to 12201564 its reverse (46510221), we get a palindrome (58711785).

The spelling of 12201564 in words is "twelve million, two hundred one thousand, five hundred sixty-four".