2101100211 has 24 divisors (see below), whose sum is σ = 3474637920. Its totient is φ = 1198498176.

The previous prime is 2101100203. The next prime is 2101100213. The reversal of 2101100211 is 1120011012.

It is a happy number.

It is not a de Polignac number, because 2101100211 - 2³ = 2101100203 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 2101100193 and 2101100202.

It is not an unprimeable number, because it can be changed into a prime (2101100213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6541 + ... + 65153.

It is an arithmetic number, because the mean of its divisors is an integer number (144776580).

Almost surely, 2^2101100211 is an apocalyptic number.

2101100211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2101100211 is a deficient number, since it is larger than the sum of its proper divisors (1373537709).

2101100211 is a wasteful number, since it uses less digits than its factorization.

2101100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59195 (or 59192 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 2101100211 is about 45837.7596638405. The cubic root of 2101100211 is about 1280.8027620206.

Adding to 2101100211 its reverse (1120011012), we get a palindrome (3221111223).

The spelling of 2101100211 in words is "two billion, one hundred one million, one hundred thousand, two hundred eleven".