212112234 has 12 divisors (see below), whose sum is σ = 459576546. Its totient is φ = 70704072.

The previous prime is 212112223. The next prime is 212112253. The reversal of 212112234 is 432211212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 211615209 + 497025 = 14547^2 + 705^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11784013 = 212112234 / (2 + 1 + 2 + 1 + 1 + 2 + 2 + 3 + 4).

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 5 ways as a sum of consecutive naturals, for example, 5891989 + ... + 5892024.

Almost surely, 2^212112234 is an apocalyptic number.

212112234 is an abundant number, since it is smaller than the sum of its proper divisors (247464312).

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

212112234 is a wasteful number, since it uses less digits than its factorization.

212112234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11784021 (or 11784018 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 212112234 is about 14564.0733999798. The cubic root of 212112234 is about 596.3784006795.

Adding to 212112234 its reverse (432211212), we get a palindrome (644323446).

The spelling of 212112234 in words is "two hundred twelve million, one hundred twelve thousand, two hundred thirty-four".