212245216 has 24 divisors (see below), whose sum is σ = 420872760. Its totient is φ = 105356928.

The previous prime is 212245177. The next prime is 212245217. The reversal of 212245216 is 612542212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212245217) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19411 + ... + 28306.

It is an arithmetic number, because the mean of its divisors is an integer number (17536365).

Almost surely, 2^212245216 is an apocalyptic number.

It is an amenable number.

212245216 is a deficient number, since it is larger than the sum of its proper divisors (208627544).

212245216 is a wasteful number, since it uses less digits than its factorization.

212245216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47866 (or 47858 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 212245216 is about 14568.6380969533. The cubic root of 212245216 is about 596.5030061349.

Adding to 212245216 its reverse (612542212), we get a palindrome (824787428).

The spelling of 212245216 in words is "two hundred twelve million, two hundred forty-five thousand, two hundred sixteen".