121911084 has 18 divisors (see below), whose sum is σ = 308164220. Its totient is φ = 40637016.

The previous prime is 121911079. The next prime is 121911103. The reversal of 121911084 is 480119121.

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 1693174 + ... + 1693245.

Almost surely, 2^121911084 is an apocalyptic number.

It is an amenable number.

121911084 is an abundant number, since it is smaller than the sum of its proper divisors (186253136).

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

121911084 is a wasteful number, since it uses less digits than its factorization.

121911084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386429 (or 3386424 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 121911084 is about 11041.3352453406. The cubic root of 121911084 is about 495.8470467941.

The spelling of 121911084 in words is "one hundred twenty-one million, nine hundred eleven thousand, eighty-four".