212424224 has 24 divisors (see below), whose sum is σ = 423254160. Its totient is φ = 104931136.

The previous prime is 212424203. The next prime is 212424227. The reversal of 212424224 is 422424212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 212424224.

It is not an unprimeable number, because it can be changed into a prime (212424227) 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, 37334 + ... + 42645.

It is an arithmetic number, because the mean of its divisors is an integer number (17635590).

Almost surely, 2^212424224 is an apocalyptic number.

It is an amenable number.

212424224 is a deficient number, since it is larger than the sum of its proper divisors (210829936).

212424224 is an equidigital number, since it uses as much as digits as its factorization.

212424224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80072 (or 80064 counting only the distinct ones).

The product of its digits is 2048, while the sum is 23.

The square root of 212424224 is about 14574.7804100096. The cubic root of 212424224 is about 596.6706562505.

Adding to 212424224 its reverse (422424212), we get a palindrome (634848436).

The spelling of 212424224 in words is "two hundred twelve million, four hundred twenty-four thousand, two hundred twenty-four".