13221223213 has 4 divisors (see below), whose sum is σ = 14423152608. Its totient is φ = 12019293820.

The previous prime is 13221223177. The next prime is 13221223243. The reversal of 13221223213 is 31232212231.

13221223213 is digitally balanced in base 2, 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.

It is a cyclic number.

It is not a de Polignac number, because 13221223213 - 2³³ = 4631288621 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 (13221223243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600964681 + ... + 600964702.

It is an arithmetic number, because the mean of its divisors is an integer number (3605788152).

Almost surely, 2^13221223213 is an apocalyptic number.

It is an amenable number.

13221223213 is a deficient number, since it is larger than the sum of its proper divisors (1201929395).

13221223213 is a wasteful number, since it uses less digits than its factorization.

13221223213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201929394.

The product of its digits is 864, while the sum is 22.

Adding to 13221223213 its reverse (31232212231), we get a palindrome (44453435444).

The spelling of 13221223213 in words is "thirteen billion, two hundred twenty-one million, two hundred twenty-three thousand, two hundred thirteen".