212222110122 has 48 divisors (see below), whose sum is σ = 515173100832. Its totient is φ = 62571627360.

The previous prime is 212222110109. The next prime is 212222110153. The reversal of 212222110122 is 221011222212.

It is a happy number.

212222110122 is a `hidden beast` number, since 212 + 222 + 110 + 122 = 666.

212222110122 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 = 212222110095 and 212222110104.

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 23 ways as a sum of consecutive naturals, for example, 14476848 + ... + 14491499.

It is an arithmetic number, because the mean of its divisors is an integer number (10732772934).

Almost surely, 2^212222110122 is an apocalyptic number.

212222110122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212222110122 is an abundant number, since it is smaller than the sum of its proper divisors (302950990710).

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

212222110122 is a wasteful number, since it uses less digits than its factorization.

212222110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28968403 (or 28968400 counting only the distinct ones).

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

Adding to 212222110122 its reverse (221011222212), we get a palindrome (433233332334).

The spelling of 212222110122 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred ten thousand, one hundred twenty-two".