12211222222 has 8 divisors (see below), whose sum is σ = 18346426200. Its totient is φ = 6095746824.

The previous prime is 12211222217. The next prime is 12211222223. The reversal of 12211222222 is 22222211221.

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

It is a super-2 number, since 2×12211222222² (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12211222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211222223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4930597 + ... + 4933072.

It is an arithmetic number, because the mean of its divisors is an integer number (2293303275).

Almost surely, 2^12211222222 is an apocalyptic number.

12211222222 is a deficient number, since it is larger than the sum of its proper divisors (6135203978).

12211222222 is an equidigital number, since it uses as much as digits as its factorization.

12211222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9864290.

The product of its digits is 256, while the sum is 19.

Adding to 12211222222 its reverse (22222211221), we get a palindrome (34433433443).

The spelling of 12211222222 in words is "twelve billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".