13444001323321 has 2 divisors, whose sum is σ = 13444001323322. Its totient is φ = 13444001323320.

The previous prime is 13444001323307. The next prime is 13444001323343. The reversal of 13444001323321 is 12332310044431.

13444001323321 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., 10702476703296 + 2741524620025 = 3271464^2 + 1655755^2 .

It is a cyclic number.

It is not a de Polignac number, because 13444001323321 - 2⁹ = 13444001322809 is a prime.

It is not a weakly prime, because it can be changed into another prime (13444001323351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722000661660 + 6722000661661.

It is an arithmetic number, because the mean of its divisors is an integer number (6722000661661).

Almost surely, 2^{13444001323321} is an apocalyptic number.

It is an amenable number.

13444001323321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13444001323321 is an equidigital number, since it uses as much as digits as its factorization.

13444001323321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 13444001323321 its reverse (12332310044431), we get a palindrome (25776311367752).

The spelling of 13444001323321 in words is "thirteen trillion, four hundred forty-four billion, one million, three hundred twenty-three thousand, three hundred twenty-one".