13221134393 has 2 divisors, whose sum is σ = 13221134394. Its totient is φ = 13221134392.

The previous prime is 13221134387. The next prime is 13221134411. The reversal of 13221134393 is 39343112231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9108220969 + 4112913424 = 95437^2 + 64132^2 .

It is a cyclic number.

It is not a de Polignac number, because 13221134393 - 2²⁰ = 13220085817 is a prime.

It is not a weakly prime, because it can be changed into another prime (13221134383) by changing a digit.

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 as a sum of consecutive naturals, namely, 6610567196 + 6610567197.

It is an arithmetic number, because the mean of its divisors is an integer number (6610567197).

Almost surely, 2^13221134393 is an apocalyptic number.

It is an amenable number.

13221134393 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221134393 is an equidigital number, since it uses as much as digits as its factorization.

13221134393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The spelling of 13221134393 in words is "thirteen billion, two hundred twenty-one million, one hundred thirty-four thousand, three hundred ninety-three".