210211112111 has 16 divisors (see below), whose sum is σ = 282241494528. Its totient is φ = 151200799200.

The previous prime is 210211112081. The next prime is 210211112123. The reversal of 210211112111 is 111211112012.

210211112111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210211112111 - 2¹⁸ = 210210849967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210211112191) 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, 104999555 + ... + 105001556.

It is an arithmetic number, because the mean of its divisors is an integer number (17640093408).

Almost surely, 2^210211112111 is an apocalyptic number.

210211112111 is a deficient number, since it is larger than the sum of its proper divisors (72030382417).

210211112111 is a wasteful number, since it uses less digits than its factorization.

210211112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210001142.

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

Adding to 210211112111 its reverse (111211112012), we get a palindrome (321422224123).

Subtracting from 210211112111 its reverse (111211112012), we obtain a palindrome (99000000099).

The spelling of 210211112111 in words is "two hundred ten billion, two hundred eleven million, one hundred twelve thousand, one hundred eleven".