212012222022 has 48 divisors (see below), whose sum is σ = 470884723920. Its totient is φ = 68919434496.

The previous prime is 212012222021. The next prime is 212012222117. The reversal of 212012222022 is 220222210212.

212012222022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 212012221986 and 212012222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012222021) 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 23 ways as a sum of consecutive naturals, for example, 789508 + ... + 1023399.

It is an arithmetic number, because the mean of its divisors is an integer number (9810098415).

Almost surely, 2^212012222022 is an apocalyptic number.

212012222022 is an abundant number, since it is smaller than the sum of its proper divisors (258872501898).

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

212012222022 is a wasteful number, since it uses less digits than its factorization.

212012222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813077 (or 1813074 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212012222022 its reverse (220222210212), we get a palindrome (432234432234).

The spelling of 212012222022 in words is "two hundred twelve billion, twelve million, two hundred twenty-two thousand, twenty-two".