13221223215206 has 16 divisors (see below), whose sum is σ = 19914656813568. Its totient is φ = 6583005744000.

The previous prime is 13221223215181. The next prime is 13221223215223. The reversal of 13221223215206 is 60251232212231.

It is a congruent 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, 18716816 + ... + 19410348.

It is an arithmetic number, because the mean of its divisors is an integer number (1244666050848).

Almost surely, 2^{13221223215206} is an apocalyptic number.

13221223215206 is a deficient number, since it is larger than the sum of its proper divisors (6693433598362).

13221223215206 is a wasteful number, since it uses less digits than its factorization.

13221223215206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733327.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 13221223215206 its reverse (60251232212231), we get a palindrome (73472455427437).

The spelling of 13221223215206 in words is "thirteen trillion, two hundred twenty-one billion, two hundred twenty-three million, two hundred fifteen thousand, two hundred six".