212304043213212 has 12 divisors (see below), whose sum is σ = 495376100830856. Its totient is φ = 70768014404400.

The previous prime is 212304043213211. The next prime is 212304043213231. The reversal of 212304043213212 is 212312340403212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 212304043213212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212304043213211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8846001800539 + ... + 8846001800562.

Almost surely, 2^{212304043213212} is an apocalyptic number.

It is an amenable number.

212304043213212 is an abundant number, since it is smaller than the sum of its proper divisors (283072057617644).

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

212304043213212 is a wasteful number, since it uses less digits than its factorization.

212304043213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17692003601108 (or 17692003601106 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 212304043213212 its reverse (212312340403212), we get a palindrome (424616383616424).

The spelling of 212304043213212 in words is "two hundred twelve trillion, three hundred four billion, forty-three million, two hundred thirteen thousand, two hundred twelve".