222222121222 has 8 divisors (see below), whose sum is σ = 336633510672. Its totient is φ = 110010951000.

The previous prime is 222222121207. The next prime is 222222121259. The reversal of 222222121222 is 222121222222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 222222121193 and 222222121202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550054554 + ... + 550054957.

It is an arithmetic number, because the mean of its divisors is an integer number (42079188834).

Almost surely, 2^222222121222 is an apocalyptic number.

222222121222 is a deficient number, since it is larger than the sum of its proper divisors (114411389450).

222222121222 is a wasteful number, since it uses less digits than its factorization.

222222121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100109614.

The product of its digits is 1024, while the sum is 22.

Adding to 222222121222 its reverse (222121222222), we get a palindrome (444343343444).

The spelling of 222222121222 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".