212224230 has 96 divisors (see below), whose sum is σ = 573213888. Its totient is φ = 54432000.

The previous prime is 212224217. The next prime is 212224231. The reversal of 212224230 is 32422212.

212224230 is a `hidden beast` number, since 21 + 222 + 423 + 0 = 666.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212224231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336015 + ... + 336645.

It is an arithmetic number, because the mean of its divisors is an integer number (5970978).

Almost surely, 2^212224230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212224230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286606944).

212224230 is an abundant number, since it is smaller than the sum of its proper divisors (360989658).

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

212224230 is a wasteful number, since it uses less digits than its factorization.

212224230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 212224230 is about 14567.9178333762. The cubic root of 212224230 is about 596.4833455037.

Adding to 212224230 its reverse (32422212), we get a palindrome (244646442).

It can be divided in two parts, 21222 and 4230, that added together give a palindrome (25452).

The spelling of 212224230 in words is "two hundred twelve million, two hundred twenty-four thousand, two hundred thirty".