212340212 has 12 divisors (see below), whose sum is σ = 424680480. Its totient is φ = 91002936.

The previous prime is 212340187. The next prime is 212340241. The reversal of 212340212 is 212043212.

212340212 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3791762 + ... + 3791817.

It is an arithmetic number, because the mean of its divisors is an integer number (35390040).

Almost surely, 2^212340212 is an apocalyptic number.

It is an amenable number.

212340212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212340212 is a wasteful number, since it uses less digits than its factorization.

212340212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7583590 (or 7583588 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212340212 is about 14571.8980232501. The cubic root of 212340212 is about 596.5919864642.

Adding to 212340212 its reverse (212043212), we get a palindrome (424383424).

The spelling of 212340212 in words is "two hundred twelve million, three hundred forty thousand, two hundred twelve".