12112122220120 has 64 divisors (see below), whose sum is σ = 29352319920000. Its totient is φ = 4471601945088.

The previous prime is 12112122220057. The next prime is 12112122220123. The reversal of 12112122220120 is 2102222121121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112122220123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2647206 + ... + 5588554.

It is an arithmetic number, because the mean of its divisors is an integer number (458629998750).

Almost surely, 2^{12112122220120} is an apocalyptic number.

12112122220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112122220120 is an abundant number, since it is smaller than the sum of its proper divisors (17240197699880).

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

12112122220120 is a wasteful number, since it uses less digits than its factorization.

12112122220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949292 (or 2949288 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12112122220120 its reverse (2102222121121), we get a palindrome (14214344341241).

The spelling of 12112122220120 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty".