121163957 has 2 divisors, whose sum is σ = 121163958. Its totient is φ = 121163956.

The previous prime is 121163941. The next prime is 121163971. The reversal of 121163957 is 759361121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77193796 + 43970161 = 8786^2 + 6631^2 .

It is a cyclic number.

It is not a de Polignac number, because 121163957 - 2⁴ = 121163941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121163927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60581978 + 60581979.

It is an arithmetic number, because the mean of its divisors is an integer number (60581979).

Almost surely, 2^121163957 is an apocalyptic number.

It is an amenable number.

121163957 is a deficient number, since it is larger than the sum of its proper divisors (1).

121163957 is an equidigital number, since it uses as much as digits as its factorization.

121163957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 35.

The square root of 121163957 is about 11007.4500680221. The cubic root of 121163957 is about 494.8320445047.

The spelling of 121163957 in words is "one hundred twenty-one million, one hundred sixty-three thousand, nine hundred fifty-seven".