12112100220220 has 288 divisors, whose sum is σ = 35112031920000. Its totient is φ = 3484796958720.

The previous prime is 12112100220203. The next prime is 12112100220239. The reversal of 12112100220220 is 2202200121121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12112100220194 and 12112100220203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10229556 + ... + 11352004.

It is an arithmetic number, because the mean of its divisors is an integer number (121916777500).

Almost surely, 2^{12112100220220} is an apocalyptic number.

12112100220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12112100220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17556015960000).

12112100220220 is an abundant number, since it is smaller than the sum of its proper divisors (22999931699780).

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

12112100220220 is a wasteful number, since it uses less digits than its factorization.

12112100220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122514 (or 1122487 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12112100220220 its reverse (2202200121121), we get a palindrome (14314300341341).

Subtracting from 12112100220220 its reverse (2202200121121), we obtain a palindrome (9909900099099).

The spelling of 12112100220220 in words is "twelve trillion, one hundred twelve billion, one hundred million, two hundred twenty thousand, two hundred twenty".