2123102112 has 24 divisors (see below), whose sum is σ = 5573143296. Its totient is φ = 707700672.

The previous prime is 2123102099. The next prime is 2123102117. The reversal of 2123102112 is 2112013212.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 2123102091 and 2123102100.

It is not an unprimeable number, because it can be changed into a prime (2123102117) 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, 11057728 + ... + 11057919.

It is an arithmetic number, because the mean of its divisors is an integer number (232214304).

Almost surely, 2^2123102112 is an apocalyptic number.

It is an amenable number.

2123102112 is an abundant number, since it is smaller than the sum of its proper divisors (3450041184).

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

2123102112 is a wasteful number, since it uses less digits than its factorization.

2123102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22115660 (or 22115652 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2123102112 is about 46077.1322024277. The cubic root of 2123102112 is about 1285.2579358771.

Adding to 2123102112 its reverse (2112013212), we get a palindrome (4235115324).

Subtracting from 2123102112 its reverse (2112013212), we obtain a square (11088900 = 3330²).

The spelling of 2123102112 in words is "two billion, one hundred twenty-three million, one hundred two thousand, one hundred twelve".