212200021212 has 12 divisors (see below), whose sum is σ = 495133382856. Its totient is φ = 70733340400.

The previous prime is 212200021207. The next prime is 212200021237. The reversal of 212200021212 is 212120002212.

212200021212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 212200021191 and 212200021200.

It is a congruent number.

It is an unprimeable number.

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, 8841667539 + ... + 8841667562.

It is an arithmetic number, because the mean of its divisors is an integer number (41261115238).

Almost surely, 2^212200021212 is an apocalyptic number.

It is an amenable number.

212200021212 is an abundant number, since it is smaller than the sum of its proper divisors (282933361644).

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

212200021212 is a wasteful number, since it uses less digits than its factorization.

212200021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17683335108 (or 17683335106 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212200021212 its reverse (212120002212), we get a palindrome (424320023424).

The spelling of 212200021212 in words is "two hundred twelve billion, two hundred million, twenty-one thousand, two hundred twelve".