1313321113221 has 8 divisors (see below), whose sum is σ = 1885794419040. Its totient is φ = 808197608112.

The previous prime is 1313321113201. The next prime is 1313321113297. The reversal of 1313321113221 is 1223111233131.

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

It is not a de Polignac number, because 1313321113221 - 2¹¹ = 1313321111173 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1313321113191 and 1313321113200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313321113201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16837450131 + ... + 16837450208.

It is an arithmetic number, because the mean of its divisors is an integer number (235724302380).

Almost surely, 2^{1313321113221} is an apocalyptic number.

It is an amenable number.

1313321113221 is a deficient number, since it is larger than the sum of its proper divisors (572473305819).

1313321113221 is a wasteful number, since it uses less digits than its factorization.

1313321113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33674900355.

The product of its digits is 648, while the sum is 24.

Adding to 1313321113221 its reverse (1223111233131), we get a palindrome (2536432346352).

The spelling of 1313321113221 in words is "one trillion, three hundred thirteen billion, three hundred twenty-one million, one hundred thirteen thousand, two hundred twenty-one".