121984688 has 40 divisors (see below), whose sum is σ = 271173120. Its totient is φ = 52073280.

The previous prime is 121984657. The next prime is 121984691. The reversal of 121984688 is 886489121.

It is a happy number.

It is an unprimeable number.

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, 28343 + ... + 32361.

It is an arithmetic number, because the mean of its divisors is an integer number (6779328).

Almost surely, 2^121984688 is an apocalyptic number.

It is an amenable number.

121984688 is an abundant number, since it is smaller than the sum of its proper divisors (149188432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121984688 is a wasteful number, since it uses less digits than its factorization.

121984688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305 (or 4299 counting only the distinct ones).

The product of its digits is 221184, while the sum is 47.

The square root of 121984688 is about 11044.6678537655. The cubic root of 121984688 is about 495.9468161845.

The spelling of 121984688 in words is "one hundred twenty-one million, nine hundred eighty-four thousand, six hundred eighty-eight".