13330032320221 has 2 divisors, whose sum is σ = 13330032320222. Its totient is φ = 13330032320220.

The previous prime is 13330032320207. The next prime is 13330032320273. The reversal of 13330032320221 is 12202323003331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11905184251321 + 1424848068900 = 3450389^2 + 1193670^2 .

It is an emirp because it is prime and its reverse (12202323003331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13330032320221 - 2⁷ = 13330032320093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13330032320621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6665016160110 + 6665016160111.

It is an arithmetic number, because the mean of its divisors is an integer number (6665016160111).

Almost surely, 2^{13330032320221} is an apocalyptic number.

It is an amenable number.

13330032320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13330032320221 is an equidigital number, since it uses as much as digits as its factorization.

13330032320221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 13330032320221 its reverse (12202323003331), we get a palindrome (25532355323552).

The spelling of 13330032320221 in words is "thirteen trillion, three hundred thirty billion, thirty-two million, three hundred twenty thousand, two hundred twenty-one".