321113020321 has 2 divisors, whose sum is σ = 321113020322. Its totient is φ = 321113020320.

The previous prime is 321113020309. The next prime is 321113020351. The reversal of 321113020321 is 123020311123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293694628096 + 27418392225 = 541936^2 + 165585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321113020321 is a prime.

It is a super-3 number, since 3×321113020321³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (321113020351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160556510160 + 160556510161.

It is an arithmetic number, because the mean of its divisors is an integer number (160556510161).

Almost surely, 2^321113020321 is an apocalyptic number.

It is an amenable number.

321113020321 is a deficient number, since it is larger than the sum of its proper divisors (1).

321113020321 is an equidigital number, since it uses as much as digits as its factorization.

321113020321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 321113020321 its reverse (123020311123), we get a palindrome (444133331444).

The spelling of 321113020321 in words is "three hundred twenty-one billion, one hundred thirteen million, twenty thousand, three hundred twenty-one".