13021320130121 has 2 divisors, whose sum is σ = 13021320130122. Its totient is φ = 13021320130120.

The previous prime is 13021320130097. The next prime is 13021320130139. The reversal of 13021320130121 is 12103102312031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11160376711225 + 1860943418896 = 3340715^2 + 1364164^2 .

It is a cyclic number.

It is not a de Polignac number, because 13021320130121 - 2³⁰ = 13020246388297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13021320130093 and 13021320130102.

It is not a weakly prime, because it can be changed into another prime (13021320100121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510660065060 + 6510660065061.

It is an arithmetic number, because the mean of its divisors is an integer number (6510660065061).

Almost surely, 2^{13021320130121} is an apocalyptic number.

It is an amenable number.

13021320130121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021320130121 is an equidigital number, since it uses as much as digits as its factorization.

13021320130121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13021320130121 its reverse (12103102312031), we get a palindrome (25124422442152).

The spelling of 13021320130121 in words is "thirteen trillion, twenty-one billion, three hundred twenty million, one hundred thirty thousand, one hundred twenty-one".