212281644208 has 20 divisors (see below), whose sum is σ = 411345395920. Its totient is φ = 106127993664.

The previous prime is 212281644203. The next prime is 212281644229. The reversal of 212281644208 is 802446182212.

212281644208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212281644203) 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, 664548 + ... + 930691.

It is an arithmetic number, because the mean of its divisors is an integer number (20567269796).

Almost surely, 2^212281644208 is an apocalyptic number.

It is an amenable number.

212281644208 is a deficient number, since it is larger than the sum of its proper divisors (199063751712).

212281644208 is a wasteful number, since it uses less digits than its factorization.

212281644208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603564 (or 1603558 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 212281644208 in words is "two hundred twelve billion, two hundred eighty-one million, six hundred forty-four thousand, two hundred eight".