116081921 has 2 divisors, whose sum is σ = 116081922. Its totient is φ = 116081920.

The previous prime is 116081873. The next prime is 116081923. The reversal of 116081921 is 129180611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106090000 + 9991921 = 10300^2 + 3161^2 .

It is a cyclic number.

It is not a de Polignac number, because 116081921 - 2⁶ = 116081857 is a prime.

It is a Sophie Germain prime.

Together with 116081923, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (116081923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58040960 + 58040961.

It is an arithmetic number, because the mean of its divisors is an integer number (58040961).

Almost surely, 2^116081921 is an apocalyptic number.

It is an amenable number.

116081921 is a deficient number, since it is larger than the sum of its proper divisors (1).

116081921 is an equidigital number, since it uses as much as digits as its factorization.

116081921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 29.

The square root of 116081921 is about 10774.1320300059. The cubic root of 116081921 is about 487.8146761699.

The spelling of 116081921 in words is "one hundred sixteen million, eighty-one thousand, nine hundred twenty-one".