3116804238221 has 2 divisors, whose sum is σ = 3116804238222. Its totient is φ = 3116804238220.

The previous prime is 3116804238167. The next prime is 3116804238287. The reversal of 3116804238221 is 1228324086113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2422272013225 + 694532224996 = 1556365^2 + 833386^2 .

It is a cyclic number.

It is not a de Polignac number, because 3116804238221 - 2³⁰ = 3115730496397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3116804235221) 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, 1558402119110 + 1558402119111.

It is an arithmetic number, because the mean of its divisors is an integer number (1558402119111).

Almost surely, 2^{3116804238221} is an apocalyptic number.

It is an amenable number.

3116804238221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3116804238221 is an equidigital number, since it uses as much as digits as its factorization.

3116804238221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 3116804238221 in words is "three trillion, one hundred sixteen billion, eight hundred four million, two hundred thirty-eight thousand, two hundred twenty-one".