212243244 has 24 divisors (see below), whose sum is σ = 496671168. Its totient is φ = 70542480.

The previous prime is 212243221. The next prime is 212243261. The reversal of 212243244 is 442342212.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21322 + ... + 29649.

It is an arithmetic number, because the mean of its divisors is an integer number (20694632).

Almost surely, 2^212243244 is an apocalyptic number.

It is an amenable number.

212243244 is an abundant number, since it is smaller than the sum of its proper divisors (284427924).

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

212243244 is a wasteful number, since it uses less digits than its factorization.

212243244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51325 (or 51323 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 212243244 is about 14568.5704171686. The cubic root of 212243244 is about 596.5011587315.

Adding to 212243244 its reverse (442342212), we get a palindrome (654585456).

The spelling of 212243244 in words is "two hundred twelve million, two hundred forty-three thousand, two hundred forty-four".