13220013 has 4 divisors (see below), whose sum is σ = 17626688. Its totient is φ = 8813340.

The previous prime is 13220003. The next prime is 13220021. The reversal of 13220013 is 31002231.

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.

It is not a de Polignac number, because 13220013 - 2⁹ = 13219501 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 (13220003) 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, 2203333 + ... + 2203338.

It is an arithmetic number, because the mean of its divisors is an integer number (4406672).

Almost surely, 2^13220013 is an apocalyptic number.

It is an amenable number.

13220013 is a deficient number, since it is larger than the sum of its proper divisors (4406675).

13220013 is an equidigital number, since it uses as much as digits as its factorization.

13220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406674.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13220013 is about 3635.9335802514. The cubic root of 13220013 is about 236.4525275439.

Adding to 13220013 its reverse (31002231), we get a palindrome (44222244).

The spelling of 13220013 in words is "thirteen million, two hundred twenty thousand, thirteen".