12020011002020 has 36 divisors (see below), whose sum is σ = 29363169735900. Its totient is φ = 4121146628928.

The previous prime is 12020011002011. The next prime is 12020011002037. The reversal of 12020011002020 is 2020011002021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9004224495616 + 3015786506404 = 3000704^2 + 1736602^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12020011001992 and 12020011002010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6132657695 + ... + 6132659654.

It is an arithmetic number, because the mean of its divisors is an integer number (815643603775).

Almost surely, 2^{12020011002020} is an apocalyptic number.

12020011002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020011002020 is an abundant number, since it is smaller than the sum of its proper divisors (17343158733880).

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

12020011002020 is a wasteful number, since it uses less digits than its factorization.

12020011002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12265317372 (or 12265317363 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12020011002020 its reverse (2020011002021), we get a palindrome (14040022004041).

Subtracting from 12020011002020 its reverse (2020011002021), we obtain a palindrome (9999999999999).

The spelling of 12020011002020 in words is "twelve trillion, twenty billion, eleven million, two thousand, twenty".