12228566 has 8 divisors (see below), whose sum is σ = 20963280. Its totient is φ = 5240808.

The previous prime is 12228563. The next prime is 12228577. The reversal of 12228566 is 66582221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436721 + ... + 436748.

It is an arithmetic number, because the mean of its divisors is an integer number (2620410).

Almost surely, 2^12228566 is an apocalyptic number.

12228566 is a deficient number, since it is larger than the sum of its proper divisors (8734714).

12228566 is an equidigital number, since it uses as much as digits as its factorization.

12228566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873478.

The product of its digits is 11520, while the sum is 32.

The square root of 12228566 is about 3496.9366594206. The cubic root of 12228566 is about 230.3872870067.

The spelling of 12228566 in words is "twelve million, two hundred twenty-eight thousand, five hundred sixty-six".