12002011200020 has 24 divisors (see below), whose sum is σ = 25205999436744. Its totient is φ = 4800466210176.

The previous prime is 12002011200007. The next prime is 12002011200079. The reversal of 12002011200020 is 2000211020021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2681458650256 + 9320552549764 = 1637516^2 + 3052958^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12002011199974 and 12002011200010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20850827 + ... + 21418706.

It is an arithmetic number, because the mean of its divisors is an integer number (1050249976531).

Almost surely, 2^{12002011200020} is an apocalyptic number.

12002011200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002011200020 is an abundant number, since it is smaller than the sum of its proper divisors (13203988236724).

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

12002011200020 is a wasteful number, since it uses less digits than its factorization.

12002011200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42283739 (or 42283737 counting only the distinct ones).

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

Adding to 12002011200020 its reverse (2000211020021), we get a palindrome (14002222220041).

The spelling of 12002011200020 in words is "twelve trillion, two billion, eleven million, two hundred thousand, twenty".