12657223 has 2 divisors, whose sum is σ = 12657224. Its totient is φ = 12657222.

The previous prime is 12657221. The next prime is 12657247. The reversal of 12657223 is 32275621.

12657223 is nontrivially palindromic in base 11.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12657223 - 2¹ = 12657221 is a prime.

Together with 12657221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12657191 and 12657200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12657221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6328611 + 6328612.

It is an arithmetic number, because the mean of its divisors is an integer number (6328612).

Almost surely, 2^12657223 is an apocalyptic number.

12657223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12657223 is an equidigital number, since it uses as much as digits as its factorization.

12657223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 12657223 is about 3557.6991160018. The cubic root of 12657223 is about 233.0484098177.

It can be divided in two parts, 12657 and 223, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 12657223 in words is "twelve million, six hundred fifty-seven thousand, two hundred twenty-three".