13125415111321 has 2 divisors, whose sum is σ = 13125415111322. Its totient is φ = 13125415111320.

The previous prime is 13125415111309. The next prime is 13125415111343. The reversal of 13125415111321 is 12311151452131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10893722718096 + 2231692393225 = 3300564^2 + 1493885^2 .

It is a cyclic number.

It is not a de Polignac number, because 13125415111321 - 2¹¹ = 13125415109273 is a prime.

It is not a weakly prime, because it can be changed into another prime (13125415121321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562707555660 + 6562707555661.

It is an arithmetic number, because the mean of its divisors is an integer number (6562707555661).

Almost surely, 2^{13125415111321} is an apocalyptic number.

It is an amenable number.

13125415111321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13125415111321 is an equidigital number, since it uses as much as digits as its factorization.

13125415111321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 31.

Adding to 13125415111321 its reverse (12311151452131), we get a palindrome (25436566563452).

The spelling of 13125415111321 in words is "thirteen trillion, one hundred twenty-five billion, four hundred fifteen million, one hundred eleven thousand, three hundred twenty-one".