2121010112 has 28 divisors (see below), whose sum is σ = 4532641176. Its totient is φ = 978927360.

The previous prime is 2121010081. The next prime is 2121010123. The reversal of 2121010112 is 2110101212.

It is a junction number, because it is equal to n+sod(n) for n = 2121010093 and 2121010102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273814 + ... + 1275477.

It is an arithmetic number, because the mean of its divisors is an integer number (161880042).

Almost surely, 2^2121010112 is an apocalyptic number.

It is an amenable number.

2121010112 is an abundant number, since it is smaller than the sum of its proper divisors (2411631064).

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

2121010112 is a wasteful number, since it uses less digits than its factorization.

2121010112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549316 (or 2549306 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2121010112 is about 46054.4255419607. The cubic root of 2121010112 is about 1284.8356539099.

Adding to 2121010112 its reverse (2110101212), we get a palindrome (4231111324).

The spelling of 2121010112 in words is "two billion, one hundred twenty-one million, ten thousand, one hundred twelve".