212112224 has 24 divisors (see below), whose sum is σ = 418255488. Its totient is φ = 105888640.

The previous prime is 212112223. The next prime is 212112253. The reversal of 212112224 is 422211212.

212112224 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16769 + ... + 26559.

It is an arithmetic number, because the mean of its divisors is an integer number (17427312).

Almost surely, 2^212112224 is an apocalyptic number.

It is an amenable number.

212112224 is a deficient number, since it is larger than the sum of its proper divisors (206143264).

212112224 is an equidigital number, since it uses as much as digits as its factorization.

212112224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10478 (or 10470 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 212112224 is about 14564.0730566693. The cubic root of 212112224 is about 596.3783913075.

Adding to 212112224 its reverse (422211212), we get a palindrome (634323436).

The spelling of 212112224 in words is "two hundred twelve million, one hundred twelve thousand, two hundred twenty-four".