13221223215204 has 24 divisors (see below), whose sum is σ = 30856284725728. Its totient is φ = 4406108135040.

The previous prime is 13221223215181. The next prime is 13221223215223. The reversal of 13221223215204 is 40251232212231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120726742 + ... + 120836205.

Almost surely, 2^{13221223215204} is an apocalyptic number.

It is an amenable number.

13221223215204 is an abundant number, since it is smaller than the sum of its proper divisors (17635061510524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221223215204 is a wasteful number, since it uses less digits than its factorization.

13221223215204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241567515 (or 241567513 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 13221223215204 its reverse (40251232212231), we get a palindrome (53472455427435).

The spelling of 13221223215204 in words is "thirteen trillion, two hundred twenty-one billion, two hundred twenty-three million, two hundred fifteen thousand, two hundred four".