211102211111 has 8 divisors (see below), whose sum is σ = 234638478864. Its totient is φ = 188290136320.

The previous prime is 211102211063. The next prime is 211102211113. The reversal of 211102211111 is 111112201112.

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

It is not a de Polignac number, because 211102211111 - 2¹⁰ = 211102210087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102211113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181047626 + ... + 181048791.

It is an arithmetic number, because the mean of its divisors is an integer number (29329809858).

Almost surely, 2^211102211111 is an apocalyptic number.

211102211111 is a deficient number, since it is larger than the sum of its proper divisors (23536267753).

211102211111 is a wasteful number, since it uses less digits than its factorization.

211102211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362096481.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211102211111 its reverse (111112201112), we get a palindrome (322214412223).

Subtracting from 211102211111 its reverse (111112201112), we obtain a palindrome (99990009999).

The spelling of 211102211111 in words is "two hundred eleven billion, one hundred two million, two hundred eleven thousand, one hundred eleven".