12112220122220 has 12 divisors (see below), whose sum is σ = 25435662256704. Its totient is φ = 4844888048880.

The previous prime is 12112220122169. The next prime is 12112220122231. The reversal of 12112220122220 is 2222102221121.

It is a super-2 number, since 2×12112220122220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 605611006111 = 12112220122220 / (1 + 2 + 1 + 1 + 2 + 2 + 2 + 0 + 1 + 2 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 12112220122192 and 12112220122201.

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 3 ways as a sum of consecutive naturals, for example, 302805503036 + ... + 302805503075.

It is an arithmetic number, because the mean of its divisors is an integer number (2119638521392).

Almost surely, 2^{12112220122220} is an apocalyptic number.

12112220122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112220122220 is an abundant number, since it is smaller than the sum of its proper divisors (13323442134484).

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

12112220122220 is a wasteful number, since it uses less digits than its factorization.

12112220122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605611006120 (or 605611006118 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12112220122220 its reverse (2222102221121), we get a palindrome (14334322343341).

The spelling of 12112220122220 in words is "twelve trillion, one hundred twelve billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty".