12112111110220 has 72 divisors (see below), whose sum is σ = 28859825361024. Its totient is φ = 4262326464000.

The previous prime is 12112111110199. The next prime is 12112111110241. The reversal of 12112111110220 is 2201111121121.

It is an interprime number because it is at equal distance from previous prime (12112111110199) and next prime (12112111110241).

It is a junction number, because it is equal to n+sod(n) for n = 12112111110194 and 12112111110203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80650861 + ... + 80800900.

It is an arithmetic number, because the mean of its divisors is an integer number (400830907792).

Almost surely, 2^{12112111110220} is an apocalyptic number.

12112111110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112111110220 is an abundant number, since it is smaller than the sum of its proper divisors (16747714250804).

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

12112111110220 is a wasteful number, since it uses less digits than its factorization.

12112111110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161451823 (or 161451810 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12112111110220 its reverse (2201111121121), we get a palindrome (14313222231341).

The spelling of 12112111110220 in words is "twelve trillion, one hundred twelve billion, one hundred eleven million, one hundred ten thousand, two hundred twenty".