12215366 has 16 divisors (see below), whose sum is σ = 19355760. Its totient is φ = 5765760.

The previous prime is 12215341. The next prime is 12215381. The reversal of 12215366 is 66351221.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19490 + ... + 20106.

It is an arithmetic number, because the mean of its divisors is an integer number (1209735).

Almost surely, 2^12215366 is an apocalyptic number.

12215366 is a deficient number, since it is larger than the sum of its proper divisors (7140394).

12215366 is a wasteful number, since it uses less digits than its factorization.

12215366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159.

The product of its digits is 2160, while the sum is 26.

The square root of 12215366 is about 3495.0487836366. The cubic root of 12215366 is about 230.3043607645.

Adding to 12215366 its reverse (66351221), we get a palindrome (78566587).

The spelling of 12215366 in words is "twelve million, two hundred fifteen thousand, three hundred sixty-six".