13112213 has 4 divisors (see below), whose sum is σ = 13120800. Its totient is φ = 13103628.

The previous prime is 13112161. The next prime is 13112221. The reversal of 13112213 is 31221131.

13112213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13112213 - 2¹⁸ = 12850069 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 (13112233) 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, 1313 + ... + 5286.

It is an arithmetic number, because the mean of its divisors is an integer number (3280200).

Almost surely, 2^13112213 is an apocalyptic number.

It is an amenable number.

13112213 is a deficient number, since it is larger than the sum of its proper divisors (8587).

13112213 is an equidigital number, since it uses as much as digits as its factorization.

13112213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586.

The product of its digits is 36, while the sum is 14.

The square root of 13112213 is about 3621.0789828448. The cubic root of 13112213 is about 235.8080707567.

Adding to 13112213 its reverse (31221131), we get a palindrome (44333344).

The spelling of 13112213 in words is "thirteen million, one hundred twelve thousand, two hundred thirteen".