212424216 has 16 divisors (see below), whose sum is σ = 531060600. Its totient is φ = 70808064.

The previous prime is 212424203. The next prime is 212424227. The reversal of 212424216 is 612424212.

It is a happy number.

212424216 is digitally balanced in base 3, 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 (24), and also a Moran number because the ratio is a prime number: 8851009 = 212424216 / (2 + 1 + 2 + 4 + 2 + 4 + 2 + 1 + 6).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4425481 + ... + 4425528.

Almost surely, 2^212424216 is an apocalyptic number.

It is an amenable number.

212424216 is an abundant number, since it is smaller than the sum of its proper divisors (318636384).

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

212424216 is a wasteful number, since it uses less digits than its factorization.

212424216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8851018 (or 8851014 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 212424216 is about 14574.7801355629. The cubic root of 212424216 is about 596.6706487602.

Adding to 212424216 its reverse (612424212), we get a palindrome (824848428).

The spelling of 212424216 in words is "two hundred twelve million, four hundred twenty-four thousand, two hundred sixteen".