12796021 has 4 divisors (see below), whose sum is σ = 14624032. Its totient is φ = 10968012.

The previous prime is 12796009. The next prime is 12796033. The reversal of 12796021 is 12069721.

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: 12069721 = 277 ⋅43573.

It is an interprime number because it is at equal distance from previous prime (12796009) and next prime (12796033).

It is a cyclic number.

It is not a de Polignac number, because 12796021 - 2²³ = 4407413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12796001) 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, 913995 + ... + 914008.

It is an arithmetic number, because the mean of its divisors is an integer number (3656008).

Almost surely, 2^12796021 is an apocalyptic number.

It is an amenable number.

12796021 is a deficient number, since it is larger than the sum of its proper divisors (1828011).

12796021 is an equidigital number, since it uses as much as digits as its factorization.

12796021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828010.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 12796021 is about 3577.1526386220. The cubic root of 12796021 is about 233.8971776563.

The spelling of 12796021 in words is "twelve million, seven hundred ninety-six thousand, twenty-one".