21200100211 has 2 divisors, whose sum is σ = 21200100212. Its totient is φ = 21200100210.

The previous prime is 21200100161. The next prime is 21200100217. The reversal of 21200100211 is 11200100212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21200100211 - 2²⁵ = 21166545779 is a prime.

It is not a weakly prime, because it can be changed into another prime (21200100217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600050105 + 10600050106.

It is an arithmetic number, because the mean of its divisors is an integer number (10600050106).

Almost surely, 2^21200100211 is an apocalyptic number.

21200100211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200100211 is an equidigital number, since it uses as much as digits as its factorization.

21200100211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21200100211 its reverse (11200100212), we get a palindrome (32400200423).

Subtracting from 21200100211 its reverse (11200100212), we obtain a palindrome (9999999999).

The spelling of 21200100211 in words is "twenty-one billion, two hundred million, one hundred thousand, two hundred eleven".