13223201221 has 8 divisors (see below), whose sum is σ = 13924332800. Its totient is φ = 12522587040.

The previous prime is 13223201213. The next prime is 13223201231. The reversal of 13223201221 is 12210232231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13223201221 - 2³ = 13223201213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223201231) 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 7 ways as a sum of consecutive naturals, for example, 76320 + ... + 179641.

It is an arithmetic number, because the mean of its divisors is an integer number (1740541600).

Almost surely, 2^13223201221 is an apocalyptic number.

It is an amenable number.

13223201221 is a deficient number, since it is larger than the sum of its proper divisors (701131579).

13223201221 is a wasteful number, since it uses less digits than its factorization.

13223201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258699.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13223201221 its reverse (12210232231), we get a palindrome (25433433452).

The spelling of 13223201221 in words is "thirteen billion, two hundred twenty-three million, two hundred one thousand, two hundred twenty-one".