13304213333221 has 8 divisors (see below), whose sum is σ = 13316911584984. Its totient is φ = 13291520563200.

The previous prime is 13304213333197. The next prime is 13304213333249. The reversal of 13304213333221 is 12233331240331.

It can be written as a sum of positive squares in 4 ways, for example, as 11248175668900 + 2056037664321 = 3353830^2 + 1433889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13304213333221 - 2⁵ = 13304213333189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13304213333251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3494121 + ... + 6230353.

It is an arithmetic number, because the mean of its divisors is an integer number (1664613948123).

Almost surely, 2^{13304213333221} is an apocalyptic number.

It is an amenable number.

13304213333221 is a deficient number, since it is larger than the sum of its proper divisors (12698251763).

13304213333221 is a wasteful number, since it uses less digits than its factorization.

13304213333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740871.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 13304213333221 its reverse (12233331240331), we get a palindrome (25537544573552).

The spelling of 13304213333221 in words is "thirteen trillion, three hundred four billion, two hundred thirteen million, three hundred thirty-three thousand, two hundred twenty-one".