321106352321 has 2 divisors, whose sum is σ = 321106352322. Its totient is φ = 321106352320.

The previous prime is 321106352311. The next prime is 321106352401. The reversal of 321106352321 is 123253601123.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232623900721 + 88482451600 = 482311^2 + 297460^2 .

It is a cyclic number.

It is not a de Polignac number, because 321106352321 - 2¹⁸ = 321106090177 is a prime.

It is not a weakly prime, because it can be changed into another prime (321106352311) 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 as a sum of consecutive naturals, namely, 160553176160 + 160553176161.

It is an arithmetic number, because the mean of its divisors is an integer number (160553176161).

Almost surely, 2^321106352321 is an apocalyptic number.

It is an amenable number.

321106352321 is a deficient number, since it is larger than the sum of its proper divisors (1).

321106352321 is an equidigital number, since it uses as much as digits as its factorization.

321106352321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 321106352321 its reverse (123253601123), we get a palindrome (444359953444).

The spelling of 321106352321 in words is "three hundred twenty-one billion, one hundred six million, three hundred fifty-two thousand, three hundred twenty-one".