321440410420249 has 2 divisors, whose sum is σ = 321440410420250. Its totient is φ = 321440410420248.

The previous prime is 321440410420231. The next prime is 321440410420397. The reversal of 321440410420249 is 942024014044123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231527629825024 + 89912780595225 = 15216032^2 + 9482235^2 .

It is a cyclic number.

It is not a de Polignac number, because 321440410420249 - 2⁷ = 321440410420121 is a prime.

It is a super-2 number, since 2×321440410420249² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321440410220249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160720205210124 + 160720205210125.

It is an arithmetic number, because the mean of its divisors is an integer number (160720205210125).

Almost surely, 2^{321440410420249} is an apocalyptic number.

It is an amenable number.

321440410420249 is a deficient number, since it is larger than the sum of its proper divisors (1).

321440410420249 is an equidigital number, since it uses as much as digits as its factorization.

321440410420249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 321440410420249 in words is "three hundred twenty-one trillion, four hundred forty billion, four hundred ten million, four hundred twenty thousand, two hundred forty-nine".