2100220011 has 12 divisors (see below), whose sum is σ = 3115642192. Its totient is φ = 1362304656.

The previous prime is 2100220007. The next prime is 2100220027. The reversal of 2100220011 is 1100220012.

It is not a de Polignac number, because 2100220011 - 2² = 2100220007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100219975 and 2100220002.

It is not an unprimeable number, because it can be changed into a prime (2100220711) 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, 3153151 + ... + 3153816.

Almost surely, 2^2100220011 is an apocalyptic number.

2100220011 is a deficient number, since it is larger than the sum of its proper divisors (1015422181).

2100220011 is a wasteful number, since it uses less digits than its factorization.

2100220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6307010 (or 6307007 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2100220011 is about 45828.1574035003. The cubic root of 2100220011 is about 1280.6238842993.

Adding to 2100220011 its reverse (1100220012), we get a palindrome (3200440023).

Subtracting from 2100220011 its reverse (1100220012), we obtain a palindrome (999999999).

It can be divided in two parts, 2100 and 220011, that added together give a triangular number (222111 = T₆₆₆).

The spelling of 2100220011 in words is "two billion, one hundred million, two hundred twenty thousand, eleven".