12231866 has 8 divisors (see below), whose sum is σ = 18774624. Its totient is φ = 5973660.

The previous prime is 12231859. The next prime is 12231889. The reversal of 12231866 is 66813221.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 71030 + ... + 71201.

It is an arithmetic number, because the mean of its divisors is an integer number (2346828).

Almost surely, 2^12231866 is an apocalyptic number.

12231866 is a deficient number, since it is larger than the sum of its proper divisors (6542758).

12231866 is a wasteful number, since it uses less digits than its factorization.

12231866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142276.

The product of its digits is 3456, while the sum is 29.

The square root of 12231866 is about 3497.4084691383. The cubic root of 12231866 is about 230.4080092421.

The spelling of 12231866 in words is "twelve million, two hundred thirty-one thousand, eight hundred sixty-six".