2100211211 has 4 divisors (see below), whose sum is σ = 2400241392. Its totient is φ = 1800181032.

The previous prime is 2100211207. The next prime is 2100211249. The reversal of 2100211211 is 1121120012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100211211 - 2² = 2100211207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100211192 and 2100211201.

It is not an unprimeable number, because it can be changed into a prime (2100211111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150015080 + ... + 150015093.

It is an arithmetic number, because the mean of its divisors is an integer number (600060348).

Almost surely, 2^2100211211 is an apocalyptic number.

2100211211 is a deficient number, since it is larger than the sum of its proper divisors (300030181).

2100211211 is an equidigital number, since it uses as much as digits as its factorization.

2100211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300030180.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2100211211 is about 45828.0613925573. The cubic root of 2100211211 is about 1280.6220956762.

Adding to 2100211211 its reverse (1121120012), we get a palindrome (3221331223).

The spelling of 2100211211 in words is "two billion, one hundred million, two hundred eleven thousand, two hundred eleven".