2101803812 has 12 divisors (see below), whose sum is σ = 3686538240. Its totient is φ = 1048507176.

The previous prime is 2101803811. The next prime is 2101803827. The reversal of 2101803812 is 2183081012.

It is not an unprimeable number, because it can be changed into a prime (2101803811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596708 + ... + 600219.

It is an arithmetic number, because the mean of its divisors is an integer number (307211520).

Almost surely, 2^2101803812 is an apocalyptic number.

It is an amenable number.

2101803812 is a deficient number, since it is larger than the sum of its proper divisors (1584734428).

2101803812 is a wasteful number, since it uses less digits than its factorization.

2101803812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197370 (or 1197368 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 2101803812 is about 45845.4339274916. The cubic root of 2101803812 is about 1280.9457146707.

Adding to 2101803812 its reverse (2183081012), we get a palindrome (4284884824).

The spelling of 2101803812 in words is "two billion, one hundred one million, eight hundred three thousand, eight hundred twelve".