13313023331221 has 8 divisors (see below), whose sum is σ = 13610506707000. Its totient is φ = 13017254557632.

The previous prime is 13313023331197. The next prime is 13313023331227. The reversal of 13313023331221 is 12213332031331.

It is a happy number.

13313023331221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10291353824196 + 3021669507025 = 3208014^2 + 1738295^2 .

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 13313023331221 - 2¹⁵ = 13313023298453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13313023331221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313023331227) 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, 428634846 + ... + 428665903.

It is an arithmetic number, because the mean of its divisors is an integer number (1701313338375).

Almost surely, 2^{13313023331221} is an apocalyptic number.

It is an amenable number.

13313023331221 is a deficient number, since it is larger than the sum of its proper divisors (297483375779).

13313023331221 is an equidigital number, since it uses as much as digits as its factorization.

13313023331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857301095.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 13313023331221 its reverse (12213332031331), we get a palindrome (25526355362552).

The spelling of 13313023331221 in words is "thirteen trillion, three hundred thirteen billion, twenty-three million, three hundred thirty-one thousand, two hundred twenty-one".