13223120204021 has 16 divisors (see below), whose sum is σ = 16541406365568. Its totient is φ = 10290736670400.

The previous prime is 13223120204009. The next prime is 13223120204053. The reversal of 13223120204021 is 12040202132231.

It is a cyclic number.

It is not a de Polignac number, because 13223120204021 - 2¹⁸ = 13223119941877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223120204621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191051935 + ... + 1191063036.

It is an arithmetic number, because the mean of its divisors is an integer number (1033837897848).

Almost surely, 2^{13223120204021} is an apocalyptic number.

It is an amenable number.

13223120204021 is a deficient number, since it is larger than the sum of its proper divisors (3318286161547).

13223120204021 is a wasteful number, since it uses less digits than its factorization.

13223120204021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382115052.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13223120204021 its reverse (12040202132231), we get a palindrome (25263322336252).

The spelling of 13223120204021 in words is "thirteen trillion, two hundred twenty-three billion, one hundred twenty million, two hundred four thousand, twenty-one".