321244340323121 has 2 divisors, whose sum is σ = 321244340323122. Its totient is φ = 321244340323120.

The previous prime is 321244340323099. The next prime is 321244340323157. The reversal of 321244340323121 is 121323043442123.

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., 308617056250000 + 12627284073121 = 17567500^2 + 3553489^2 .

It is a cyclic number.

It is not a de Polignac number, because 321244340323121 - 2¹⁰ = 321244340322097 is a prime.

It is not a weakly prime, because it can be changed into another prime (321244340323021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160622170161560 + 160622170161561.

It is an arithmetic number, because the mean of its divisors is an integer number (160622170161561).

Almost surely, 2^{321244340323121} is an apocalyptic number.

It is an amenable number.

321244340323121 is a deficient number, since it is larger than the sum of its proper divisors (1).

321244340323121 is an equidigital number, since it uses as much as digits as its factorization.

321244340323121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 321244340323121 its reverse (121323043442123), we get a palindrome (442567383765244).

The spelling of 321244340323121 in words is "three hundred twenty-one trillion, two hundred forty-four billion, three hundred forty million, three hundred twenty-three thousand, one hundred twenty-one".