121568912 has 20 divisors (see below), whose sum is σ = 241018800. Its totient is φ = 59370528.

The previous prime is 121568879. The next prime is 121568933. The reversal of 121568912 is 219865121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87662 + ... + 89037.

It is an arithmetic number, because the mean of its divisors is an integer number (12050940).

Almost surely, 2^121568912 is an apocalyptic number.

It is an amenable number.

121568912 is a deficient number, since it is larger than the sum of its proper divisors (119449888).

121568912 is a wasteful number, since it uses less digits than its factorization.

121568912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176750 (or 176744 counting only the distinct ones).

The product of its digits is 8640, while the sum is 35.

The square root of 121568912 is about 11025.8293112128. The cubic root of 121568912 is about 495.3827084886.

The spelling of 121568912 in words is "one hundred twenty-one million, five hundred sixty-eight thousand, nine hundred twelve".