12295621 has 4 divisors (see below), whose sum is σ = 13241452. Its totient is φ = 11349792.

The previous prime is 12295597. The next prime is 12295631. The reversal of 12295621 is 12659221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12659221 = 547 ⋅23143.

It can be written as a sum of positive squares in 2 ways, for example, as 2772225 + 9523396 = 1665^2 + 3086^2 .

It is a cyclic number.

It is not a de Polignac number, because 12295621 - 2⁵ = 12295589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12295621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12295631) 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, 472896 + ... + 472921.

It is an arithmetic number, because the mean of its divisors is an integer number (3310363).

Almost surely, 2^12295621 is an apocalyptic number.

It is an amenable number.

12295621 is a deficient number, since it is larger than the sum of its proper divisors (945831).

12295621 is an equidigital number, since it uses as much as digits as its factorization.

12295621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945830.

The product of its digits is 2160, while the sum is 28.

The square root of 12295621 is about 3506.5112291279. The cubic root of 12295621 is about 230.8076270499.

The spelling of 12295621 in words is "twelve million, two hundred ninety-five thousand, six hundred twenty-one".