212112102012210 has 32 divisors (see below), whose sum is σ = 565632272033280. Its totient is φ = 56563227203184.

The previous prime is 212112102012131. The next prime is 212112102012211. The reversal of 212112102012210 is 12210201211212.

212112102012210 is a `hidden beast` number, since 2 + 1 + 211 + 210 + 20 + 1 + 221 + 0 = 666.

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 (212112102012211) 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 15 ways as a sum of consecutive naturals, for example, 392800188642 + ... + 392800189181.

It is an arithmetic number, because the mean of its divisors is an integer number (17676008501040).

Almost surely, 2^{212112102012210} is an apocalyptic number.

212112102012210 is an abundant number, since it is smaller than the sum of its proper divisors (353520170021070).

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

212112102012210 is a wasteful number, since it uses less digits than its factorization.

212112102012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785600377839 (or 785600377833 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212112102012210 its reverse (12210201211212), we get a palindrome (224322303223422).

The spelling of 212112102012210 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred two million, twelve thousand, two hundred ten".