12679222 has 4 divisors (see below), whose sum is σ = 19018836. Its totient is φ = 6339610.

The previous prime is 12679193. The next prime is 12679223. The reversal of 12679222 is 22297621.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12679223) by changing a digit.

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 as a sum of consecutive naturals, namely, 3169804 + ... + 3169807.

It is an arithmetic number, because the mean of its divisors is an integer number (4754709).

Almost surely, 2^12679222 is an apocalyptic number.

12679222 is a deficient number, since it is larger than the sum of its proper divisors (6339614).

12679222 is an equidigital number, since it uses as much as digits as its factorization.

12679222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6339613.

The product of its digits is 6048, while the sum is 31.

The square root of 12679222 is about 3560.7895191937. The cubic root of 12679222 is about 233.1833489637.

The spelling of 12679222 in words is "twelve million, six hundred seventy-nine thousand, two hundred twenty-two".