212221112 has 16 divisors (see below), whose sum is σ = 404659800. Its totient is φ = 104311840.

The previous prime is 212221067. The next prime is 212221153. The reversal of 212221112 is 211122212.

212221112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 224339 + ... + 225282.

Almost surely, 2^212221112 is an apocalyptic number.

It is an amenable number.

212221112 is a deficient number, since it is larger than the sum of its proper divisors (192438688).

212221112 is a wasteful number, since it uses less digits than its factorization.

212221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449686 (or 449682 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 212221112 is about 14567.8108170034. The cubic root of 212221112 is about 596.4804243102.

Adding to 212221112 its reverse (211122212), we get a palindrome (423343324).

The spelling of 212221112 in words is "two hundred twelve million, two hundred twenty-one thousand, one hundred twelve".