211210222111 has 16 divisors (see below), whose sum is σ = 246565693440. Its totient is φ = 177151858560.

The previous prime is 211210221997. The next prime is 211210222129. The reversal of 211210222111 is 111222012112.

211210222111 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 211210222111 - 2¹¹ = 211210220063 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 (211210222211) 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, 1758270 + ... + 1874548.

It is an arithmetic number, because the mean of its divisors is an integer number (15410355840).

Almost surely, 2^211210222111 is an apocalyptic number.

211210222111 is a deficient number, since it is larger than the sum of its proper divisors (35355471329).

211210222111 is a wasteful number, since it uses less digits than its factorization.

211210222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121854.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211210222111 its reverse (111222012112), we get a palindrome (322432234223).

The spelling of 211210222111 in words is "two hundred eleven billion, two hundred ten million, two hundred twenty-two thousand, one hundred eleven".