12011002120020 has 96 divisors (see below), whose sum is σ = 34460829164160. Its totient is φ = 3123928330240.

The previous prime is 12011002120009. The next prime is 12011002120049. The reversal of 12011002120020 is 2002120011021.

12011002120020 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 = 12011002119978 and 12011002120005.

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, 8016124 + ... + 9395756.

It is an arithmetic number, because the mean of its divisors is an integer number (358966970460).

Almost surely, 2^{12011002120020} is an apocalyptic number.

12011002120020 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 12011002120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17230414582080).

12011002120020 is an abundant number, since it is smaller than the sum of its proper divisors (22449827044140).

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

12011002120020 is a wasteful number, since it uses less digits than its factorization.

12011002120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383225 (or 1383223 counting only the distinct ones).

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

Adding to 12011002120020 its reverse (2002120011021), we get a palindrome (14013122131041).

The spelling of 12011002120020 in words is "twelve trillion, eleven billion, two million, one hundred twenty thousand, twenty".