211233222 has 48 divisors (see below), whose sum is σ = 494810160. Its totient is φ = 64898496.

The previous prime is 211233221. The next prime is 211233227. The reversal of 211233222 is 222332112.

211233222 is a `hidden beast` number, since 211 + 233 + 222 = 666.

211233222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 211233195 and 211233204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211233221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4308 + ... + 21000.

It is an arithmetic number, because the mean of its divisors is an integer number (10308545).

Almost surely, 2^211233222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211233222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247405080).

211233222 is an abundant number, since it is smaller than the sum of its proper divisors (283576938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211233222 is a wasteful number, since it uses less digits than its factorization.

211233222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16757 (or 16754 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 211233222 is about 14533.8646615413. The cubic root of 211233222 is about 595.5534449851.

Adding to 211233222 its reverse (222332112), we get a palindrome (433565334).

The spelling of 211233222 in words is "two hundred eleven million, two hundred thirty-three thousand, two hundred twenty-two".