212224312 has 16 divisors (see below), whose sum is σ = 415221840. Its totient is φ = 101498496.

The previous prime is 212224301. The next prime is 212224321. The reversal of 212224312 is 213422212.

It is a self number, because there is not a number n which added to its sum of digits gives 212224312.

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, 576513 + ... + 576880.

It is an arithmetic number, because the mean of its divisors is an integer number (25951365).

Almost surely, 2^212224312 is an apocalyptic number.

It is an amenable number.

212224312 is a deficient number, since it is larger than the sum of its proper divisors (202997528).

212224312 is a wasteful number, since it uses less digits than its factorization.

212224312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153422 (or 1153418 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 212224312 is about 14567.9206477795. The cubic root of 212224312 is about 596.4834223276.

Adding to 212224312 its reverse (213422212), we get a palindrome (425646524).

The spelling of 212224312 in words is "two hundred twelve million, two hundred twenty-four thousand, three hundred twelve".