12112100011220 has 48 divisors (see below), whose sum is σ = 27901022438016. Its totient is φ = 4380066288000.

The previous prime is 12112100011181. The next prime is 12112100011237. The reversal of 12112100011220 is 2211000121121.

It is a junction number, because it is equal to n+sod(n) for n = 12112100011195 and 12112100011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152045816 + ... + 152125455.

It is an arithmetic number, because the mean of its divisors is an integer number (581271300792).

Almost surely, 2^{12112100011220} is an apocalyptic number.

12112100011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112100011220 is an abundant number, since it is smaller than the sum of its proper divisors (15788922426796).

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

12112100011220 is a wasteful number, since it uses less digits than its factorization.

12112100011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304171472 (or 304171470 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12112100011220 its reverse (2211000121121), we get a palindrome (14323100132341).

The spelling of 12112100011220 in words is "twelve trillion, one hundred twelve billion, one hundred million, eleven thousand, two hundred twenty".