12011112020 has 12 divisors (see below), whose sum is σ = 25223335284. Its totient is φ = 4804444800.

The previous prime is 12011112007. The next prime is 12011112077. The reversal of 12011112020 is 2021111021.

12011112020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2758980676 + 9252131344 = 52526^2 + 96188^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12011111992 and 12011112010.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 300277781 + ... + 300277820.

It is an arithmetic number, because the mean of its divisors is an integer number (2101944607).

Almost surely, 2^12011112020 is an apocalyptic number.

12011112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011112020 is an abundant number, since it is smaller than the sum of its proper divisors (13212223264).

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

12011112020 is a wasteful number, since it uses less digits than its factorization.

12011112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600555610 (or 600555608 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12011112020 its reverse (2021111021), we get a palindrome (14032223041).

Subtracting from 12011112020 its reverse (2021111021), we obtain a palindrome (9990000999).

The spelling of 12011112020 in words is "twelve billion, eleven million, one hundred twelve thousand, twenty".