21101101110211 has 8 divisors (see below), whose sum is σ = 21459288970800. Its totient is φ = 20742931319040.

The previous prime is 21101101110181. The next prime is 21101101110233. The reversal of 21101101110211 is 11201110110112.

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 21101101110211 - 2⁵ = 21101101110179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21101101110191 and 21101101110200.

It is not an unprimeable number, because it can be changed into a prime (21101101110281) 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, 2151546 + ... + 6843343.

It is an arithmetic number, because the mean of its divisors is an integer number (2682411121350).

Almost surely, 2^{21101101110211} is an apocalyptic number.

21101101110211 is a deficient number, since it is larger than the sum of its proper divisors (358187860589).

21101101110211 is an equidigital number, since it uses as much as digits as its factorization.

21101101110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9034709.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 21101101110211 its reverse (11201110110112), we get a palindrome (32302211220323).

The spelling of 21101101110211 in words is "twenty-one trillion, one hundred one billion, one hundred one million, one hundred ten thousand, two hundred eleven".