212122102212 has 96 divisors (see below), whose sum is σ = 565034601600. Its totient is φ = 68792150016.

The previous prime is 212122102177. The next prime is 212122102237. The reversal of 212122102212 is 212201221212.

It is a happy number.

212122102212 is a `hidden beast` number, since 21 + 212 + 210 + 221 + 2 = 666.

212122102212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×212122102212³ (a number of 35 digits) contains 333 as substring.

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

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 31 ways as a sum of consecutive naturals, for example, 446488 + ... + 789680.

It is an arithmetic number, because the mean of its divisors is an integer number (5885777100).

Almost surely, 2^212122102212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212122102212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282517300800).

212122102212 is an abundant number, since it is smaller than the sum of its proper divisors (352912499388).

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

212122102212 is a wasteful number, since it uses less digits than its factorization.

212122102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343362 (or 343354 counting only the distinct ones).

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

Adding to 212122102212 its reverse (212201221212), we get a palindrome (424323323424).

The spelling of 212122102212 in words is "two hundred twelve billion, one hundred twenty-two million, one hundred two thousand, two hundred twelve".