13333332312221 has 2 divisors, whose sum is σ = 13333332312222. Its totient is φ = 13333332312220.

The previous prime is 13333332312151. The next prime is 13333332312229. The reversal of 13333332312221 is 12221323333331.

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., 8938485472900 + 4394846839321 = 2989730^2 + 2096389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13333332312221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13333332312229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6666666156110 + 6666666156111.

It is an arithmetic number, because the mean of its divisors is an integer number (6666666156111).

Almost surely, 2^{13333332312221} is an apocalyptic number.

It is an amenable number.

13333332312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13333332312221 is an equidigital number, since it uses as much as digits as its factorization.

13333332312221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 32.

Adding to 13333332312221 its reverse (12221323333331), we get a palindrome (25554655645552).

The spelling of 13333332312221 in words is "thirteen trillion, three hundred thirty-three billion, three hundred thirty-two million, three hundred twelve thousand, two hundred twenty-one".