12020112120 has 128 divisors (see below), whose sum is σ = 37991404800. Its totient is φ = 3034008576.

The previous prime is 12020112109. The next prime is 12020112121. The reversal of 12020112120 is 2121102021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12020112096 and 12020112105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020112121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4871127 + ... + 4873593.

It is an arithmetic number, because the mean of its divisors is an integer number (296807850).

Almost surely, 2^12020112120 is an apocalyptic number.

12020112120 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 12020112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18995702400).

12020112120 is an abundant number, since it is smaller than the sum of its proper divisors (25971292680).

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

12020112120 is a wasteful number, since it uses less digits than its factorization.

12020112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637 (or 4633 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12020112120 its reverse (2121102021), we get a palindrome (14141214141).

The spelling of 12020112120 in words is "twelve billion, twenty million, one hundred twelve thousand, one hundred twenty".