13010020331221 has 2 divisors, whose sum is σ = 13010020331222. Its totient is φ = 13010020331220.

The previous prime is 13010020331201. The next prime is 13010020331237. The reversal of 13010020331221 is 12213302001031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10945252506321 + 2064767824900 = 3308361^2 + 1436930^2 .

It is a cyclic number.

It is not a de Polignac number, because 13010020331221 - 2³³ = 13001430396629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13010020331201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6505010165610 + 6505010165611.

It is an arithmetic number, because the mean of its divisors is an integer number (6505010165611).

Almost surely, 2^{13010020331221} is an apocalyptic number.

It is an amenable number.

13010020331221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13010020331221 is an equidigital number, since it uses as much as digits as its factorization.

13010020331221 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 19.

Adding to 13010020331221 its reverse (12213302001031), we get a palindrome (25223322332252).

The spelling of 13010020331221 in words is "thirteen trillion, ten billion, twenty million, three hundred thirty-one thousand, two hundred twenty-one".