12112111220122 has 8 divisors (see below), whose sum is σ = 18262302410196. Its totient is φ = 6024677083392.

The previous prime is 12112111220093. The next prime is 12112111220173. The reversal of 12112111220122 is 22102211121121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11926047534921 + 186063685201 = 3453411^2 + 431351^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12112111220122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15689262853 + ... + 15689263624.

Almost surely, 2^{12112111220122} is an apocalyptic number.

12112111220122 is a deficient number, since it is larger than the sum of its proper divisors (6150191190074).

12112111220122 is a wasteful number, since it uses less digits than its factorization.

12112111220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31378526672.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12112111220122 its reverse (22102211121121), we get a palindrome (34214322341243).

Subtracting 12112111220122 from its reverse (22102211121121), we obtain a palindrome (9990099900999).

The spelling of 12112111220122 in words is "twelve trillion, one hundred twelve billion, one hundred eleven million, two hundred twenty thousand, one hundred twenty-two".