321110999773 has 2 divisors, whose sum is σ = 321110999774. Its totient is φ = 321110999772.

The previous prime is 321110999761. The next prime is 321110999843. The reversal of 321110999773 is 377999011123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320778375129 + 332624644 = 566373^2 + 18238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321110999773 is a prime.

It is a super-2 number, since 2×321110999773² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321110999773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321110999873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160555499886 + 160555499887.

It is an arithmetic number, because the mean of its divisors is an integer number (160555499887).

Almost surely, 2^321110999773 is an apocalyptic number.

It is an amenable number.

321110999773 is a deficient number, since it is larger than the sum of its proper divisors (1).

321110999773 is an equidigital number, since it uses as much as digits as its factorization.

321110999773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 642978, while the sum is 52.

The spelling of 321110999773 in words is "three hundred twenty-one billion, one hundred ten million, nine hundred ninety-nine thousand, seven hundred seventy-three".