13121320120213 has 2 divisors, whose sum is σ = 13121320120214. Its totient is φ = 13121320120212.

The previous prime is 13121320120157. The next prime is 13121320120241. The reversal of 13121320120213 is 31202102312131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12588176272324 + 533143847889 = 3547982^2 + 730167^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121320120213 - 2⁹ = 13121320119701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121320120313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560660060106 + 6560660060107.

It is an arithmetic number, because the mean of its divisors is an integer number (6560660060107).

Almost surely, 2^{13121320120213} is an apocalyptic number.

It is an amenable number.

13121320120213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121320120213 is an equidigital number, since it uses as much as digits as its factorization.

13121320120213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13121320120213 its reverse (31202102312131), we get a palindrome (44323422432344).

The spelling of 13121320120213 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twenty million, one hundred twenty thousand, two hundred thirteen".