12822857 has 4 divisors (see below), whose sum is σ = 12830160. Its totient is φ = 12815556.

The previous prime is 12822851. The next prime is 12822863. The reversal of 12822857 is 75822821.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75822821 = 101 ⋅750721.

It is an interprime number because it is at equal distance from previous prime (12822851) and next prime (12822863).

It is a cyclic number.

It is not a de Polignac number, because 12822857 - 2²² = 8628553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12822851) 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, 758 + ... + 5120.

It is an arithmetic number, because the mean of its divisors is an integer number (3207540).

Almost surely, 2^12822857 is an apocalyptic number.

It is an amenable number.

12822857 is a deficient number, since it is larger than the sum of its proper divisors (7303).

12822857 is an equidigital number, since it uses as much as digits as its factorization.

12822857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302.

The product of its digits is 17920, while the sum is 35.

The square root of 12822857 is about 3580.9017020857. The cubic root of 12822857 is about 234.0605743295.

The spelling of 12822857 in words is "twelve million, eight hundred twenty-two thousand, eight hundred fifty-seven".