222120112122 has 24 divisors (see below), whose sum is σ = 481275505620. Its totient is φ = 74037689280.

The previous prime is 222120112079. The next prime is 222120112127. The reversal of 222120112122 is 221211021222.

It is a happy number.

222120112122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 134226244161 + 87893867961 = 366369^2 + 296469^2 .

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 = 222120112095 and 222120112104.

It is not an unprimeable number, because it can be changed into a prime (222120112127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 444222 + ... + 800982.

Almost surely, 2^222120112122 is an apocalyptic number.

222120112122 is an abundant number, since it is smaller than the sum of its proper divisors (259155393498).

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

222120112122 is a wasteful number, since it uses less digits than its factorization.

222120112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391358 (or 391355 counting only the distinct ones).

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

Adding to 222120112122 its reverse (221211021222), we get a palindrome (443331133344).

The spelling of 222120112122 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty-two".