12112321222 has 16 divisors (see below), whose sum is σ = 18257767632. Its totient is φ = 6026469120.

The previous prime is 12112321181. The next prime is 12112321259. The reversal of 12112321222 is 22212321121.

It is a self number, because there is not a number n which added to its sum of digits gives 12112321222.

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 7 ways as a sum of consecutive naturals, for example, 335322 + ... + 369682.

It is an arithmetic number, because the mean of its divisors is an integer number (1141110477).

Almost surely, 2^12112321222 is an apocalyptic number.

12112321222 is a deficient number, since it is larger than the sum of its proper divisors (6145446410).

12112321222 is a wasteful number, since it uses less digits than its factorization.

12112321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35223.

The product of its digits is 192, while the sum is 19.

Adding to 12112321222 its reverse (22212321121), we get a palindrome (34324642343).

The spelling of 12112321222 in words is "twelve billion, one hundred twelve million, three hundred twenty-one thousand, two hundred twenty-two".