12322257 has 4 divisors (see below), whose sum is σ = 16429680. Its totient is φ = 8214836.

The previous prime is 12322243. The next prime is 12322301. The reversal of 12322257 is 75222321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75222321 = 3 ⋅25074107.

It is a cyclic number.

It is not a de Polignac number, because 12322257 - 2⁸ = 12322001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12322207) 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 in 3 ways as a sum of consecutive naturals, for example, 2053707 + ... + 2053712.

It is an arithmetic number, because the mean of its divisors is an integer number (4107420).

Almost surely, 2^12322257 is an apocalyptic number.

It is an amenable number.

12322257 is a deficient number, since it is larger than the sum of its proper divisors (4107423).

12322257 is an equidigital number, since it uses as much as digits as its factorization.

12322257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107422.

The product of its digits is 1680, while the sum is 24.

The square root of 12322257 is about 3510.3072515095. The cubic root of 12322257 is about 230.9741730088.

Adding to 12322257 its reverse (75222321), we get a palindrome (87544578).

The spelling of 12322257 in words is "twelve million, three hundred twenty-two thousand, two hundred fifty-seven".