12000012222 has 64 divisors (see below), whose sum is σ = 26597652480. Its totient is φ = 3578995200.

The previous prime is 12000012181. The next prime is 12000012289. The reversal of 12000012222 is 22221000021.

It is a junction number, because it is equal to n+sod(n) for n = 12000012198 and 12000012207.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1305322 + ... + 1314482.

It is an arithmetic number, because the mean of its divisors is an integer number (415588320).

Almost surely, 2^12000012222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12000012222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13298826240).

12000012222 is an abundant number, since it is smaller than the sum of its proper divisors (14597640258).

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

12000012222 is a wasteful number, since it uses less digits than its factorization.

12000012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12000012222 its reverse (22221000021), we get a palindrome (34221012243).

The spelling of 12000012222 in words is "twelve billion, twelve thousand, two hundred twenty-two".