13223210621 has 4 divisors (see below), whose sum is σ = 13224439200. Its totient is φ = 13221982044.

The previous prime is 13223210603. The next prime is 13223210633. The reversal of 13223210621 is 12601232231.

13223210621 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 13223210621 - 2¹⁸ = 13222948477 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 (13223210821) 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, 598001 + ... + 619718.

It is an arithmetic number, because the mean of its divisors is an integer number (3306109800).

Almost surely, 2^13223210621 is an apocalyptic number.

It is an amenable number.

13223210621 is a deficient number, since it is larger than the sum of its proper divisors (1228579).

13223210621 is a wasteful number, since it uses less digits than its factorization.

13223210621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228578.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 13223210621 its reverse (12601232231), we get a palindrome (25824442852).

The spelling of 13223210621 in words is "thirteen billion, two hundred twenty-three million, two hundred ten thousand, six hundred twenty-one".