222101212122 has 24 divisors (see below), whose sum is σ = 481287261780. Its totient is φ = 74023280640.

The previous prime is 222101212079. The next prime is 222101212127. The reversal of 222101212122 is 221212101222.

It is a happy number.

222101212122 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 221877739521 + 223472601 = 471039^2 + 14949^2 .

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 = 222101212095 and 222101212104.

It is not an unprimeable number, because it can be changed into a prime (222101212127) 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, 739879 + ... + 995802.

Almost surely, 2^222101212122 is an apocalyptic number.

222101212122 is an abundant number, since it is smaller than the sum of its proper divisors (259186049658).

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

222101212122 is a wasteful number, since it uses less digits than its factorization.

222101212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742798 (or 1742795 counting only the distinct ones).

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

Adding to 222101212122 its reverse (221212101222), we get a palindrome (443313313344).

The spelling of 222101212122 in words is "two hundred twenty-two billion, one hundred one million, two hundred twelve thousand, one hundred twenty-two".