212244216 has 32 divisors (see below), whose sum is σ = 542952960. Its totient is φ = 69102432.

The previous prime is 212244211. The next prime is 212244217. The reversal of 212244216 is 612442212.

It is a happy number.

212244216 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).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212244211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101800 + ... + 103863.

It is an arithmetic number, because the mean of its divisors is an integer number (16967280).

Almost surely, 2^212244216 is an apocalyptic number.

It is an amenable number.

212244216 is an abundant number, since it is smaller than the sum of its proper divisors (330708744).

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

212244216 is a wasteful number, since it uses less digits than its factorization.

212244216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205715 (or 205711 counting only the distinct ones).

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

The square root of 212244216 is about 14568.6037766150. The cubic root of 212244216 is about 596.5020693192.

Adding to 212244216 its reverse (612442212), we get a palindrome (824686428).

The spelling of 212244216 in words is "two hundred twelve million, two hundred forty-four thousand, two hundred sixteen".