12224279 has 2 divisors, whose sum is σ = 12224280. Its totient is φ = 12224278.

The previous prime is 12224257. The next prime is 12224281. The reversal of 12224279 is 97242221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12224279 - 2¹² = 12220183 is a prime.

Together with 12224281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12224209) by changing a digit.

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 as a sum of consecutive naturals, namely, 6112139 + 6112140.

It is an arithmetic number, because the mean of its divisors is an integer number (6112140).

Almost surely, 2^12224279 is an apocalyptic number.

12224279 is a deficient number, since it is larger than the sum of its proper divisors (1).

12224279 is an equidigital number, since it uses as much as digits as its factorization.

12224279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 12224279 is about 3496.3236406260. The cubic root of 12224279 is about 230.3603613710.

The spelling of 12224279 in words is "twelve million, two hundred twenty-four thousand, two hundred seventy-nine".