121984387092 has 36 divisors (see below), whose sum is σ = 321755921760. Its totient is φ = 38893572432.

The previous prime is 121984387051. The next prime is 121984387093. The reversal of 121984387092 is 290783489121.

121984387092 is a `hidden beast` number, since 12 + 198 + 438 + 7 + 0 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121984387093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73661242 + ... + 73662897.

Almost surely, 2^121984387092 is an apocalyptic number.

121984387092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121984387092 is an abundant number, since it is smaller than the sum of its proper divisors (199771534668).

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

121984387092 is a wasteful number, since it uses less digits than its factorization.

121984387092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147324172 (or 147324167 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 121984387092 in words is "one hundred twenty-one billion, nine hundred eighty-four million, three hundred eighty-seven thousand, ninety-two".