2121113104 has 20 divisors (see below), whose sum is σ = 4483262160. Its totient is φ = 964142240.

The previous prime is 2121113101. The next prime is 2121113129. The reversal of 2121113104 is 4013111212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (2121113101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6025714 + ... + 6026065.

It is an arithmetic number, because the mean of its divisors is an integer number (224163108).

Almost surely, 2^2121113104 is an apocalyptic number.

It is an amenable number.

2121113104 is an abundant number, since it is smaller than the sum of its proper divisors (2362149056).

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

2121113104 is a wasteful number, since it uses less digits than its factorization.

2121113104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12051798 (or 12051792 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 2121113104 is about 46055.5436836870. The cubic root of 2121113104 is about 1284.8564499214.

Adding to 2121113104 its reverse (4013111212), we get a palindrome (6134224316).

The spelling of 2121113104 in words is "two billion, one hundred twenty-one million, one hundred thirteen thousand, one hundred four".