2101912803 has 12 divisors (see below), whose sum is σ = 3100694688. Its totient is φ = 1371460560.

The previous prime is 2101912801. The next prime is 2101912823. The reversal of 2101912803 is 3082191012.

2101912803 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2101912803 - 2¹ = 2101912801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101912801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2484108 + ... + 2484953.

It is an arithmetic number, because the mean of its divisors is an integer number (258391224).

Almost surely, 2^2101912803 is an apocalyptic number.

2101912803 is a deficient number, since it is larger than the sum of its proper divisors (998781885).

2101912803 is a wasteful number, since it uses less digits than its factorization.

2101912803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4969114 (or 4969111 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2101912803 is about 45846.6225909826. The cubic root of 2101912803 is about 1280.9678558335.

The spelling of 2101912803 in words is "two billion, one hundred one million, nine hundred twelve thousand, eight hundred three".