212012122020210 has 24 divisors (see below), whose sum is σ = 551231517252780. Its totient is φ = 56536565872032.

The previous prime is 212012122020173. The next prime is 212012122020211. The reversal of 212012122020210 is 12020221210212.

It is a happy number.

212012122020210 is a `hidden beast` number, since 2 + 1 + 201 + 212 + 20 + 20 + 210 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 211901678126649 + 110443893561 = 14556843^2 + 332331^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212012122020211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1177845122245 + ... + 1177845122424.

Almost surely, 2^{212012122020210} is an apocalyptic number.

212012122020210 is an abundant number, since it is smaller than the sum of its proper divisors (339219395232570).

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

212012122020210 is a wasteful number, since it uses less digits than its factorization.

212012122020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355690244682 (or 2355690244679 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212012122020210 its reverse (12020221210212), we get a palindrome (224032343230422).

The spelling of 212012122020210 in words is "two hundred twelve trillion, twelve billion, one hundred twenty-two million, twenty thousand, two hundred ten".