211222222211 has 16 divisors (see below), whose sum is σ = 283599068928. Its totient is φ = 151928071200.

The previous prime is 211222222199. The next prime is 211222222223. The reversal of 211222222211 is 112222222112.

211222222211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211222222199) and next prime (211222222223).

It is a cyclic number.

It is not a de Polignac number, because 211222222211 - 2⁶ = 211222222147 is a prime.

It is a super-2 number, since 2×211222222211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222222111) 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, 105504605 + ... + 105506606.

It is an arithmetic number, because the mean of its divisors is an integer number (17724941808).

Almost surely, 2^211222222211 is an apocalyptic number.

211222222211 is a deficient number, since it is larger than the sum of its proper divisors (72376846717).

211222222211 is a wasteful number, since it uses less digits than its factorization.

211222222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211011242.

The product of its digits is 256, while the sum is 20.

Adding to 211222222211 its reverse (112222222112), we get a palindrome (323444444323).

Subtracting from 211222222211 its reverse (112222222112), we obtain a palindrome (99000000099).

It can be divided in two parts, 2 and 11222222211, that multiplied together give a palindrome (22444444422).

The spelling of 211222222211 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".