2100220111 has 6 divisors (see below), whose sum is σ = 2308506536. Its totient is φ = 1909290900.

The previous prime is 2100220099. The next prime is 2100220139. The reversal of 2100220111 is 1110220012.

It is not a de Polignac number, because 2100220111 - 2⁵ = 2100220079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100220711) 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 5 ways as a sum of consecutive naturals, for example, 8678475 + ... + 8678716.

Almost surely, 2^2100220111 is an apocalyptic number.

2100220111 is a deficient number, since it is larger than the sum of its proper divisors (208286425).

2100220111 is a wasteful number, since it uses less digits than its factorization.

2100220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17357213 (or 17357202 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2100220111 is about 45828.1584945326. The cubic root of 2100220111 is about 1280.6239046245.

Adding to 2100220111 its reverse (1110220012), we get a palindrome (3210440123).

Subtracting from 2100220111 its reverse (1110220012), we obtain a palindrome (990000099).

The spelling of 2100220111 in words is "two billion, one hundred million, two hundred twenty thousand, one hundred eleven".