321102120322649 has 2 divisors, whose sum is σ = 321102120322650. Its totient is φ = 321102120322648.

The previous prime is 321102120322601. The next prime is 321102120322681. The reversal of 321102120322649 is 946223021201123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197843719570249 + 123258400752400 = 14065693^2 + 11102180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321102120322649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (321102120322349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160551060161324 + 160551060161325.

It is an arithmetic number, because the mean of its divisors is an integer number (160551060161325).

Almost surely, 2^{321102120322649} is an apocalyptic number.

It is an amenable number.

321102120322649 is a deficient number, since it is larger than the sum of its proper divisors (1).

321102120322649 is an equidigital number, since it uses as much as digits as its factorization.

321102120322649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 321102120322649 in words is "three hundred twenty-one trillion, one hundred two billion, one hundred twenty million, three hundred twenty-two thousand, six hundred forty-nine".