212231224 has 16 divisors (see below), whose sum is σ = 401068800. Its totient is φ = 105279552.

The previous prime is 212231219. The next prime is 212231231. The reversal of 212231224 is 422132212.

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, 103429 + ... + 105460.

It is an arithmetic number, because the mean of its divisors is an integer number (25066800).

Almost surely, 2^212231224 is an apocalyptic number.

It is an amenable number.

212231224 is a deficient number, since it is larger than the sum of its proper divisors (188837576).

212231224 is a wasteful number, since it uses less digits than its factorization.

212231224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209022 (or 209018 counting only the distinct ones).

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

The square root of 212231224 is about 14568.1578794301. The cubic root of 212231224 is about 596.4898979423.

Adding to 212231224 its reverse (422132212), we get a palindrome (634363436).

The spelling of 212231224 in words is "two hundred twelve million, two hundred thirty-one thousand, two hundred twenty-four".