13244322344221 has 2 divisors, whose sum is σ = 13244322344222. Its totient is φ = 13244322344220.

The previous prime is 13244322344219. The next prime is 13244322344263. The reversal of 13244322344221 is 12244322344231.

13244322344221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9005310783225 + 4239011560996 = 3000885^2 + 2058886^2 .

It is a cyclic number.

It is not a de Polignac number, because 13244322344221 - 2¹ = 13244322344219 is a prime.

Together with 13244322344219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13244322344621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6622161172110 + 6622161172111.

It is an arithmetic number, because the mean of its divisors is an integer number (6622161172111).

Almost surely, 2^{13244322344221} is an apocalyptic number.

It is an amenable number.

13244322344221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13244322344221 is an equidigital number, since it uses as much as digits as its factorization.

13244322344221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 37.

Adding to 13244322344221 its reverse (12244322344231), we get a palindrome (25488644688452).

The spelling of 13244322344221 in words is "thirteen trillion, two hundred forty-four billion, three hundred twenty-two million, three hundred forty-four thousand, two hundred twenty-one".