13321333333221 has 16 divisors (see below), whose sum is σ = 18241980411648. Its totient is φ = 8640791640000.

The previous prime is 13321333333207. The next prime is 13321333333291. The reversal of 13321333333221 is 12233333312331.

It is not a de Polignac number, because 13321333333221 - 2⁹ = 13321333332709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321333333291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14684596 + ... + 15565346.

It is an arithmetic number, because the mean of its divisors is an integer number (1140123775728).

Almost surely, 2^{13321333333221} is an apocalyptic number.

It is an amenable number.

13321333333221 is a deficient number, since it is larger than the sum of its proper divisors (4920647078427).

13321333333221 is a wasteful number, since it uses less digits than its factorization.

13321333333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017052.

The product of its digits is 52488, while the sum is 33.

Adding to 13321333333221 its reverse (12233333312331), we get a palindrome (25554666645552).

The spelling of 13321333333221 in words is "thirteen trillion, three hundred twenty-one billion, three hundred thirty-three million, three hundred thirty-three thousand, two hundred twenty-one".