12112012020120 has 128 divisors (see below), whose sum is σ = 37235726619840. Its totient is φ = 3149954293760.

The previous prime is 12112012020113. The next prime is 12112012020133. The reversal of 12112012020120 is 2102021021121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12112012020120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13219594 + ... + 14106086.

Almost surely, 2^{12112012020120} is an apocalyptic number.

12112012020120 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 12112012020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18617863309920).

12112012020120 is an abundant number, since it is smaller than the sum of its proper divisors (25123714599720).

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

12112012020120 is a wasteful number, since it uses less digits than its factorization.

12112012020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889325 (or 889321 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12112012020120 its reverse (2102021021121), we get a palindrome (14214033041241).

The spelling of 12112012020120 in words is "twelve trillion, one hundred twelve billion, twelve million, twenty thousand, one hundred twenty".