12797321 has 4 divisors (see below), whose sum is σ = 12807444. Its totient is φ = 12787200.

The previous prime is 12797303. The next prime is 12797333. The reversal of 12797321 is 12379721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12379721 = 2693 ⋅4597.

It can be written as a sum of positive squares in 2 ways, for example, as 2325625 + 10471696 = 1525^2 + 3236^2 .

It is a cyclic number.

It is not a de Polignac number, because 12797321 - 2²² = 8603017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12796321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840 + ... + 5801.

It is an arithmetic number, because the mean of its divisors is an integer number (3201861).

Almost surely, 2^12797321 is an apocalyptic number.

It is an amenable number.

12797321 is a deficient number, since it is larger than the sum of its proper divisors (10123).

12797321 is an equidigital number, since it uses as much as digits as its factorization.

12797321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10122.

The product of its digits is 5292, while the sum is 32.

The square root of 12797321 is about 3577.3343427754. The cubic root of 12797321 is about 233.9050982443.

The spelling of 12797321 in words is "twelve million, seven hundred ninety-seven thousand, three hundred twenty-one".