13212226568 has 12 divisors (see below), whose sum is σ = 24773534415. Its totient is φ = 6605950728.

The previous prime is 13212226523. The next prime is 13212226591. The reversal of 13212226568 is 86562221231.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 6606113284 + 6606113284 = 81278^2 + 81278^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=81278.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 304793 + ... + 345431.

Almost surely, 2^13212226568 is an apocalyptic number.

It is an amenable number.

13212226568 is a deficient number, since it is larger than the sum of its proper divisors (11561307847).

13212226568 is an frugal number, since it uses more digits than its factorization.

13212226568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81284 (or 40641 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

Adding to 13212226568 its reverse (86562221231), we get a palindrome (99774447799).

The spelling of 13212226568 in words is "thirteen billion, two hundred twelve million, two hundred twenty-six thousand, five hundred sixty-eight".