121159949 has 2 divisors, whose sum is σ = 121159950. Its totient is φ = 121159948.

The previous prime is 121159943. The next prime is 121159963. The reversal of 121159949 is 949951121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104919049 + 16240900 = 10243^2 + 4030^2 .

It is a cyclic number.

It is not a de Polignac number, because 121159949 - 2⁴ = 121159933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121159943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60579974 + 60579975.

It is an arithmetic number, because the mean of its divisors is an integer number (60579975).

Almost surely, 2^121159949 is an apocalyptic number.

It is an amenable number.

121159949 is a deficient number, since it is larger than the sum of its proper divisors (1).

121159949 is an equidigital number, since it uses as much as digits as its factorization.

121159949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 41.

The square root of 121159949 is about 11007.2680080027. The cubic root of 121159949 is about 494.8265882377.

The spelling of 121159949 in words is "one hundred twenty-one million, one hundred fifty-nine thousand, nine hundred forty-nine".