12188065 has 16 divisors (see below), whose sum is σ = 15579648. Its totient is φ = 9121536.

The previous prime is 12188027. The next prime is 12188069. The reversal of 12188065 is 56088121.

It is a cyclic number.

It is not a de Polignac number, because 12188065 - 2¹¹ = 12186017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12188069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18634 + ... + 19276.

It is an arithmetic number, because the mean of its divisors is an integer number (973728).

Almost surely, 2^12188065 is an apocalyptic number.

It is an amenable number.

12188065 is a deficient number, since it is larger than the sum of its proper divisors (3391583).

12188065 is a wasteful number, since it uses less digits than its factorization.

12188065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 12188065 is about 3491.1409309852. The cubic root of 12188065 is about 230.1326581910.

The spelling of 12188065 in words is "twelve million, one hundred eighty-eight thousand, sixty-five".