13220297 has 4 divisors (see below), whose sum is σ = 13236480. Its totient is φ = 13204116.

The previous prime is 13220287. The next prime is 13220309. The reversal of 13220297 is 79202231.

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.

It is a cyclic number.

It is not a de Polignac number, because 13220297 - 2⁴ = 13220281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6797 + ... + 8522.

It is an arithmetic number, because the mean of its divisors is an integer number (3309120).

Almost surely, 2^13220297 is an apocalyptic number.

It is an amenable number.

13220297 is a deficient number, since it is larger than the sum of its proper divisors (16183).

13220297 is an equidigital number, since it uses as much as digits as its factorization.

13220297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16182.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13220297 is about 3635.9726346605. The cubic root of 13220297 is about 236.4542207353.

The spelling of 13220297 in words is "thirteen million, two hundred twenty thousand, two hundred ninety-seven".