68162011121 has 2 divisors, whose sum is σ = 68162011122. Its totient is φ = 68162011120.

The previous prime is 68162011117. The next prime is 68162011237. The reversal of 68162011121 is 12111026186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39030348721 + 29131662400 = 197561^2 + 170680^2 .

It is a cyclic number.

It is not a de Polignac number, because 68162011121 - 2² = 68162011117 is a prime.

It is not a weakly prime, because it can be changed into another prime (68162014121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34081005560 + 34081005561.

It is an arithmetic number, because the mean of its divisors is an integer number (34081005561).

Almost surely, 2^68162011121 is an apocalyptic number.

It is an amenable number.

68162011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

68162011121 is an equidigital number, since it uses as much as digits as its factorization.

68162011121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 68162011121 in words is "sixty-eight billion, one hundred sixty-two million, eleven thousand, one hundred twenty-one".