321113213221 has 8 divisors (see below), whose sum is σ = 323384499200. Its totient is φ = 318843831600.

The previous prime is 321113213207. The next prime is 321113213233. The reversal of 321113213221 is 122312311123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321113213221 is a prime.

It is a super-3 number, since 3×321113213221³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 321113213192 and 321113213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321113213251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136806 + ... + 812983.

It is an arithmetic number, because the mean of its divisors is an integer number (40423062400).

Almost surely, 2^321113213221 is an apocalyptic number.

It is an amenable number.

321113213221 is a deficient number, since it is larger than the sum of its proper divisors (2271285979).

321113213221 is a wasteful number, since it uses less digits than its factorization.

321113213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952179.

The product of its digits is 432, while the sum is 22.

Adding to 321113213221 its reverse (122312311123), we get a palindrome (443425524344).

The spelling of 321113213221 in words is "three hundred twenty-one billion, one hundred thirteen million, two hundred thirteen thousand, two hundred twenty-one".