121698916 has 24 divisors (see below), whose sum is σ = 217818720. Its totient is φ = 59480832.

The previous prime is 121698851. The next prime is 121698919. The reversal of 121698916 is 619896121.

It is not an unprimeable number, because it can be changed into a prime (121698919) 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 in 7 ways as a sum of consecutive naturals, for example, 30315 + ... + 34093.

It is an arithmetic number, because the mean of its divisors is an integer number (9075780).

Almost surely, 2^121698916 is an apocalyptic number.

It is an amenable number.

121698916 is a deficient number, since it is larger than the sum of its proper divisors (96119804).

121698916 is a wasteful number, since it uses less digits than its factorization.

121698916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963 (or 3961 counting only the distinct ones).

The product of its digits is 46656, while the sum is 43.

The square root of 121698916 is about 11031.7231654896. The cubic root of 121698916 is about 495.5592305655.

The spelling of 121698916 in words is "one hundred twenty-one million, six hundred ninety-eight thousand, nine hundred sixteen".