2111109984 has 72 divisors (see below), whose sum is σ = 6210509760. Its totient is φ = 679435008.

The previous prime is 2111109961. The next prime is 2111110019. The reversal of 2111109984 is 4899011112.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118032 + ... + 134735.

It is an arithmetic number, because the mean of its divisors is an integer number (86257080).

Almost surely, 2^2111109984 is an apocalyptic number.

2111109984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2111109984 is an abundant number, since it is smaller than the sum of its proper divisors (4099399776).

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

2111109984 is a wasteful number, since it uses less digits than its factorization.

2111109984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252812 (or 252801 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 2111109984 is about 45946.8169082473. The cubic root of 2111109984 is about 1282.8334821262.

The spelling of 2111109984 in words is "two billion, one hundred eleven million, one hundred nine thousand, nine hundred eighty-four".