21200110211 has 8 divisors (see below), whose sum is σ = 24256779264. Its totient is φ = 18150461640.

The previous prime is 21200110201. The next prime is 21200110223. The reversal of 21200110211 is 11201100212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21200110211 - 2⁶ = 21200110147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21200110192 and 21200110201.

It is not an unprimeable number, because it can be changed into a prime (21200110201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1748645 + ... + 1760726.

It is an arithmetic number, because the mean of its divisors is an integer number (3032097408).

Almost surely, 2^21200110211 is an apocalyptic number.

21200110211 is a deficient number, since it is larger than the sum of its proper divisors (3056669053).

21200110211 is an equidigital number, since it uses as much as digits as its factorization.

21200110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510241.

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

Adding to 21200110211 its reverse (11201100212), we get a palindrome (32401210423).

Subtracting from 21200110211 its reverse (11201100212), we obtain a palindrome (9999009999).

The spelling of 21200110211 in words is "twenty-one billion, two hundred million, one hundred ten thousand, two hundred eleven".