13321230002221 has 2 divisors, whose sum is σ = 13321230002222. Its totient is φ = 13321230002220.

The previous prime is 13321230002189. The next prime is 13321230002237. The reversal of 13321230002221 is 12220003212331.

13321230002221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10441047650121 + 2880182352100 = 3231261^2 + 1697110^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321230002221 - 2⁵ = 13321230002189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13321230002192 and 13321230002201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13321230002291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660615001110 + 6660615001111.

It is an arithmetic number, because the mean of its divisors is an integer number (6660615001111).

Almost surely, 2^{13321230002221} is an apocalyptic number.

It is an amenable number.

13321230002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321230002221 is an equidigital number, since it uses as much as digits as its factorization.

13321230002221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13321230002221 its reverse (12220003212331), we get a palindrome (25541233214552).

The spelling of 13321230002221 in words is "thirteen trillion, three hundred twenty-one billion, two hundred thirty million, two thousand, two hundred twenty-one".