12133566 has 24 divisors (see below), whose sum is σ = 26684424. Its totient is φ = 3983760.

The previous prime is 12133547. The next prime is 12133577. The reversal of 12133566 is 66533121.

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 11 ways as a sum of consecutive naturals, for example, 3825 + ... + 6236.

It is an arithmetic number, because the mean of its divisors is an integer number (1111851).

Almost surely, 2^12133566 is an apocalyptic number.

12133566 is an abundant number, since it is smaller than the sum of its proper divisors (14550858).

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

12133566 is a wasteful number, since it uses less digits than its factorization.

12133566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10136 (or 10133 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 12133566 is about 3483.3268580482. The cubic root of 12133566 is about 229.7891325045.

Adding to 12133566 its reverse (66533121), we get a palindrome (78666687).

The spelling of 12133566 in words is "twelve million, one hundred thirty-three thousand, five hundred sixty-six".