321112303321 has 2 divisors, whose sum is σ = 321112303322. Its totient is φ = 321112303320.

The previous prime is 321112303319. The next prime is 321112303331. The reversal of 321112303321 is 123303211123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275557804096 + 45554499225 = 524936^2 + 213435^2 .

It is a cyclic number.

It is not a de Polignac number, because 321112303321 - 2¹ = 321112303319 is a prime.

It is a super-2 number, since 2×321112303321² (a number of 24 digits) contains 22 as substring.

Together with 321112303319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 321112303292 and 321112303301.

It is not a weakly prime, because it can be changed into another prime (321112303301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160556151660 + 160556151661.

It is an arithmetic number, because the mean of its divisors is an integer number (160556151661).

Almost surely, 2^321112303321 is an apocalyptic number.

It is an amenable number.

321112303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

321112303321 is an equidigital number, since it uses as much as digits as its factorization.

321112303321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 321112303321 its reverse (123303211123), we get a palindrome (444415514444).

The spelling of 321112303321 in words is "three hundred twenty-one billion, one hundred twelve million, three hundred three thousand, three hundred twenty-one".