12012112020 has 96 divisors (see below), whose sum is σ = 35237099520. Its totient is φ = 3051664000.

The previous prime is 12012111989. The next prime is 12012112027. The reversal of 12012112020 is 2021121021.

12012112020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 12012111987 and 12012112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012112027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329041 + ... + 363719.

It is an arithmetic number, because the mean of its divisors is an integer number (367053120).

Almost surely, 2^12012112020 is an apocalyptic number.

12012112020 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 12012112020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17618549760).

12012112020 is an abundant number, since it is smaller than the sum of its proper divisors (23224987500).

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

12012112020 is a wasteful number, since it uses less digits than its factorization.

12012112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34965 (or 34963 counting only the distinct ones).

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

Adding to 12012112020 its reverse (2021121021), we get a palindrome (14033233041).

Subtracting from 12012112020 its reverse (2021121021), we obtain a palindrome (9990990999).

The spelling of 12012112020 in words is "twelve billion, twelve million, one hundred twelve thousand, twenty".