13333233201221 has 2 divisors, whose sum is σ = 13333233201222. Its totient is φ = 13333233201220.

The previous prime is 13333233201199. The next prime is 13333233201289. The reversal of 13333233201221 is 12210233233331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12891654345025 + 441578856196 = 3590495^2 + 664514^2 .

It is a cyclic number.

It is not a de Polignac number, because 13333233201221 - 2¹⁸ = 13333232939077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13333233201521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6666616600610 + 6666616600611.

It is an arithmetic number, because the mean of its divisors is an integer number (6666616600611).

Almost surely, 2^{13333233201221} is an apocalyptic number.

It is an amenable number.

13333233201221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13333233201221 is an equidigital number, since it uses as much as digits as its factorization.

13333233201221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 13333233201221 its reverse (12210233233331), we get a palindrome (25543466434552).

The spelling of 13333233201221 in words is "thirteen trillion, three hundred thirty-three billion, two hundred thirty-three million, two hundred one thousand, two hundred twenty-one".