2101863211 has 16 divisors (see below), whose sum is σ = 2508364800. Its totient is φ = 1722032928.

The previous prime is 2101863161. The next prime is 2101863229. The reversal of 2101863211 is 1123681012.

It is not a de Polignac number, because 2101863211 - 2¹⁹ = 2101338923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101863251) 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 15 ways as a sum of consecutive naturals, for example, 271330 + ... + 278968.

It is an arithmetic number, because the mean of its divisors is an integer number (156772800).

Almost surely, 2^2101863211 is an apocalyptic number.

2101863211 is a deficient number, since it is larger than the sum of its proper divisors (406501589).

2101863211 is a wasteful number, since it uses less digits than its factorization.

2101863211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9378.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2101863211 is about 45846.0817409732. The cubic root of 2101863211 is about 1280.9577814769.

The spelling of 2101863211 in words is "two billion, one hundred one million, eight hundred sixty-three thousand, two hundred eleven".