121156163 has 2 divisors, whose sum is σ = 121156164. Its totient is φ = 121156162.

The previous prime is 121156121. The next prime is 121156169. The reversal of 121156163 is 361651121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121156163 - 2⁶ = 121156099 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (121156169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60578081 + 60578082.

It is an arithmetic number, because the mean of its divisors is an integer number (60578082).

Almost surely, 2^121156163 is an apocalyptic number.

121156163 is a deficient number, since it is larger than the sum of its proper divisors (1).

121156163 is an equidigital number, since it uses as much as digits as its factorization.

121156163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 121156163 is about 11007.0960293803. The cubic root of 121156163 is about 494.8214340786.

The spelling of 121156163 in words is "one hundred twenty-one million, one hundred fifty-six thousand, one hundred sixty-three".