321213313122321 has 32 divisors (see below), whose sum is σ = 450305238556800. Its totient is φ = 203397129689600.

The previous prime is 321213313122259. The next prime is 321213313122341. The reversal of 321213313122321 is 123221313312123.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 321213313122321 - 2¹⁵ = 321213313089553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321213313122341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103764855 + ... + 106815596.

It is an arithmetic number, because the mean of its divisors is an integer number (14072038704900).

Almost surely, 2^{321213313122321} is an apocalyptic number.

It is an amenable number.

321213313122321 is a deficient number, since it is larger than the sum of its proper divisors (129091925434479).

321213313122321 is a wasteful number, since it uses less digits than its factorization.

321213313122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210580769.

The product of its digits is 7776, while the sum is 30.

Adding to 321213313122321 its reverse (123221313312123), we get a palindrome (444434626434444).

The spelling of 321213313122321 in words is "three hundred twenty-one trillion, two hundred thirteen billion, three hundred thirteen million, one hundred twenty-two thousand, three hundred twenty-one".