3208161157121 has 2 divisors, whose sum is σ = 3208161157122. Its totient is φ = 3208161157120.

The previous prime is 3208161157099. The next prime is 3208161157133. The reversal of 3208161157121 is 1217511618023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3204386406400 + 3774750721 = 1790080^2 + 61439^2 .

It is an emirp because it is prime and its reverse (1217511618023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3208161157121 is a prime.

It is not a weakly prime, because it can be changed into another prime (3208161127121) 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, 1604080578560 + 1604080578561.

It is an arithmetic number, because the mean of its divisors is an integer number (1604080578561).

Almost surely, 2^{3208161157121} is an apocalyptic number.

It is an amenable number.

3208161157121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3208161157121 is an equidigital number, since it uses as much as digits as its factorization.

3208161157121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 3208161157121 in words is "three trillion, two hundred eight billion, one hundred sixty-one million, one hundred fifty-seven thousand, one hundred twenty-one".