212112312 has 16 divisors (see below), whose sum is σ = 530280840. Its totient is φ = 70704096.

The previous prime is 212112301. The next prime is 212112317. The reversal of 212112312 is 213211212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212112291 and 212112300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112317) 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, 4418983 + ... + 4419030.

Almost surely, 2^212112312 is an apocalyptic number.

It is an amenable number.

212112312 is an abundant number, since it is smaller than the sum of its proper divisors (318168528).

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

212112312 is a wasteful number, since it uses less digits than its factorization.

212112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838022 (or 8838018 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 212112312 is about 14564.0760778018. The cubic root of 212112312 is about 596.3784737816.

Adding to 212112312 its reverse (213211212), we get a palindrome (425323524).

The spelling of 212112312 in words is "two hundred twelve million, one hundred twelve thousand, three hundred twelve".