211210112111 has 16 divisors (see below), whose sum is σ = 217401239808. Its totient is φ = 205111051200.

The previous prime is 211210112093. The next prime is 211210112173. The reversal of 211210112111 is 111211012112.

211210112111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211210112111 is a prime.

It is a super-2 number, since 2×211210112111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210114111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11783246 + ... + 11801156.

It is an arithmetic number, because the mean of its divisors is an integer number (13587577488).

Almost surely, 2^211210112111 is an apocalyptic number.

211210112111 is a deficient number, since it is larger than the sum of its proper divisors (6191127697).

211210112111 is a wasteful number, since it uses less digits than its factorization.

211210112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20462.

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

Adding to 211210112111 its reverse (111211012112), we get a palindrome (322421124223).

Subtracting from 211210112111 its reverse (111211012112), we obtain a palindrome (99999099999).

It can be divided in two parts, 2112101 and 12111, that added together give a palindrome (2124212).

The spelling of 211210112111 in words is "two hundred eleven billion, two hundred ten million, one hundred twelve thousand, one hundred eleven".