12112122212222 has 16 divisors (see below), whose sum is σ = 18518489123472. Its totient is φ = 5940068376000.

The previous prime is 12112122212191. The next prime is 12112122212237. The reversal of 12112122212222 is 22221222121121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193936529 + ... + 193998972.

It is an arithmetic number, because the mean of its divisors is an integer number (1157405570217).

Almost surely, 2^{12112122212222} is an apocalyptic number.

12112122212222 is a deficient number, since it is larger than the sum of its proper divisors (6406366911250).

12112122212222 is a wasteful number, since it uses less digits than its factorization.

12112122212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387935803.

The product of its digits is 512, while the sum is 23.

Adding to 12112122212222 its reverse (22221222121121), we get a palindrome (34333344333343).

The spelling of 12112122212222 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".