12002002011020 has 96 divisors (see below), whose sum is σ = 29249326592640. Its totient is φ = 4051852738560.

The previous prime is 12002002010987. The next prime is 12002002011023. The reversal of 12002002011020 is 2011020020021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12002002010992 and 12002002011010.

It is not an unprimeable number, because it can be changed into a prime (12002002011023) 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, 1004432 + ... + 5001288.

It is an arithmetic number, because the mean of its divisors is an integer number (304680485340).

Almost surely, 2^{12002002011020} is an apocalyptic number.

12002002011020 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 12002002011020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14624663296320).

12002002011020 is an abundant number, since it is smaller than the sum of its proper divisors (17247324581620).

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

12002002011020 is a wasteful number, since it uses less digits than its factorization.

12002002011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997203 (or 3997201 counting only the distinct ones).

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

Adding to 12002002011020 its reverse (2011020020021), we get a palindrome (14013022031041).

The spelling of 12002002011020 in words is "twelve trillion, two billion, two million, eleven thousand, twenty".