121965868 has 12 divisors (see below), whose sum is σ = 213804360. Its totient is φ = 60878912.

The previous prime is 121965863. The next prime is 121965889. The reversal of 121965868 is 868569121.

It is not an unprimeable number, because it can be changed into a prime (121965863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23338 + ... + 28081.

It is an arithmetic number, because the mean of its divisors is an integer number (17817030).

Almost surely, 2^121965868 is an apocalyptic number.

It is an amenable number.

121965868 is a deficient number, since it is larger than the sum of its proper divisors (91838492).

121965868 is a wasteful number, since it uses less digits than its factorization.

121965868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52016 (or 52014 counting only the distinct ones).

The product of its digits is 207360, while the sum is 46.

The square root of 121965868 is about 11043.8158260630. The cubic root of 121965868 is about 495.9213097069.

The spelling of 121965868 in words is "one hundred twenty-one million, nine hundred sixty-five thousand, eight hundred sixty-eight".