2101566612 has 24 divisors (see below), whose sum is σ = 4958755200. Its totient is φ = 692650816.

The previous prime is 2101566587. The next prime is 2101566617. The reversal of 2101566612 is 2166651012.

It is a self number, because there is not a number n which added to its sum of digits gives 2101566612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101566617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982812 + ... + 984947.

It is an arithmetic number, because the mean of its divisors is an integer number (206614800).

Almost surely, 2^2101566612 is an apocalyptic number.

It is an amenable number.

2101566612 is an abundant number, since it is smaller than the sum of its proper divisors (2857188588).

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

2101566612 is a wasteful number, since it uses less digits than its factorization.

2101566612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967855 (or 1967853 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2101566612 is about 45842.8469011252. The cubic root of 2101566612 is about 1280.8975256259.

The spelling of 2101566612 in words is "two billion, one hundred one million, five hundred sixty-six thousand, six hundred twelve".