212212112 has 40 divisors (see below), whose sum is σ = 485064192. Its totient is φ = 88012800.

The previous prime is 212212093. The next prime is 212212123. The reversal of 212212112 is 211212212.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27089 + ... + 34032.

Almost surely, 2^212212112 is an apocalyptic number.

It is an amenable number.

212212112 is an abundant number, since it is smaller than the sum of its proper divisors (272852080).

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

212212112 is a wasteful number, since it uses less digits than its factorization.

212212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61167 (or 61161 counting only the distinct ones).

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

The square root of 212212112 is about 14567.5019135060. The cubic root of 212212112 is about 596.4719922246.

Adding to 212212112 its reverse (211212212), we get a palindrome (423424324).

The spelling of 212212112 in words is "two hundred twelve million, two hundred twelve thousand, one hundred twelve".