2101000111 has 8 divisors (see below), whose sum is σ = 2402834720. Its totient is φ = 1799588448.

The previous prime is 2101000093. The next prime is 2101000171. The reversal of 2101000111 is 1110001012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2101000111 - 2⁹ = 2100999599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101000094 and 2101000103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101000171) 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, 95016 + ... + 115021.

It is an arithmetic number, because the mean of its divisors is an integer number (300354340).

Almost surely, 2^2101000111 is an apocalyptic number.

2101000111 is a deficient number, since it is larger than the sum of its proper divisors (301834609).

2101000111 is a wasteful number, since it uses less digits than its factorization.

2101000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211473.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 2101000111 is about 45836.6677562844. The cubic root of 2101000111 is about 1280.7824218210.

Adding to 2101000111 its reverse (1110001012), we get a palindrome (3211001123).

Subtracting from 2101000111 its reverse (1110001012), we obtain a palindrome (990999099).

The spelling of 2101000111 in words is "two billion, one hundred one million, one hundred eleven", and thus it is an aban number.