212231212 has 24 divisors (see below), whose sum is σ = 393023232. Its totient is φ = 100069200.

The previous prime is 212231207. The next prime is 212231219. The reversal of 212231212 is 212132212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212231219) 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, 9714 + ... + 22777.

It is an arithmetic number, because the mean of its divisors is an integer number (16375968).

Almost surely, 2^212231212 is an apocalyptic number.

It is an amenable number.

212231212 is a deficient number, since it is larger than the sum of its proper divisors (180792020).

212231212 is a wasteful number, since it uses less digits than its factorization.

212231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32589 (or 32587 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 212231212 is about 14568.1574675729. The cubic root of 212231212 is about 596.4898867001.

Adding to 212231212 its reverse (212132212), we get a palindrome (424363424).

The spelling of 212231212 in words is "two hundred twelve million, two hundred thirty-one thousand, two hundred twelve".