212120210210 has 24 divisors (see below), whose sum is σ = 402969647196. Its totient is φ = 80382394080.

The previous prime is 212120210209. The next prime is 212120210219. The reversal of 212120210210 is 12012021212.

212120210210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 191916714889 + 20203495321 = 438083^2 + 142139^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212120210219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29375921 + ... + 29383140.

Almost surely, 2^212120210210 is an apocalyptic number.

212120210210 is a deficient number, since it is larger than the sum of its proper divisors (190849436986).

212120210210 is a wasteful number, since it uses less digits than its factorization.

212120210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58759106 (or 58759087 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212120210210 its reverse (12012021212), we get a palindrome (224132231422).

The spelling of 212120210210 in words is "two hundred twelve billion, one hundred twenty million, two hundred ten thousand, two hundred ten".