2101040112 has 20 divisors (see below), whose sum is σ = 5427687080. Its totient is φ = 700346688.

The previous prime is 2101040101. The next prime is 2101040113. The reversal of 2101040112 is 2110401012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101040113) 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, 21885787 + ... + 21885882.

It is an arithmetic number, because the mean of its divisors is an integer number (271384354).

Almost surely, 2^2101040112 is an apocalyptic number.

It is an amenable number.

2101040112 is an abundant number, since it is smaller than the sum of its proper divisors (3326646968).

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

2101040112 is a wasteful number, since it uses less digits than its factorization.

2101040112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43771680 (or 43771674 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2101040112 is about 45837.1040970086. The cubic root of 2101040112 is about 1280.7905500536.

Adding to 2101040112 its reverse (2110401012), we get a palindrome (4211441124).

The spelling of 2101040112 in words is "two billion, one hundred one million, forty thousand, one hundred twelve".