321135305325511 has 2 divisors, whose sum is σ = 321135305325512. Its totient is φ = 321135305325510.

The previous prime is 321135305325479. The next prime is 321135305325587. The reversal of 321135305325511 is 115523503531123.

It is a weak prime.

It is an emirp because it is prime and its reverse (115523503531123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321135305325511 - 2⁵ = 321135305325479 is a prime.

It is a super-2 number, since 2×321135305325511² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321135305325911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160567652662755 + 160567652662756.

It is an arithmetic number, because the mean of its divisors is an integer number (160567652662756).

Almost surely, 2^{321135305325511} is an apocalyptic number.

321135305325511 is a deficient number, since it is larger than the sum of its proper divisors (1).

321135305325511 is an equidigital number, since it uses as much as digits as its factorization.

321135305325511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 202500, while the sum is 40.

Adding to 321135305325511 its reverse (115523503531123), we get a palindrome (436658808856634).

The spelling of 321135305325511 in words is "three hundred twenty-one trillion, one hundred thirty-five billion, three hundred five million, three hundred twenty-five thousand, five hundred eleven".