2120111924 has 12 divisors (see below), whose sum is σ = 4240223904. Its totient is φ = 908619384.

The previous prime is 2120111923. The next prime is 2120111993. The reversal of 2120111924 is 4291110212.

2120111924 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120111924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120111921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 37859114 + ... + 37859169.

It is an arithmetic number, because the mean of its divisors is an integer number (353351992).

Almost surely, 2^2120111924 is an apocalyptic number.

It is an amenable number.

2120111924 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2120111924 is a wasteful number, since it uses less digits than its factorization.

2120111924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75718294 (or 75718292 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 2120111924 is about 46044.6731338165. The cubic root of 2120111924 is about 1284.6542644080.

The spelling of 2120111924 in words is "two billion, one hundred twenty million, one hundred eleven thousand, nine hundred twenty-four".