12000120002020 has 48 divisors (see below), whose sum is σ = 25282219722480. Its totient is φ = 4784436873216.

The previous prime is 12000120001973. The next prime is 12000120002023. The reversal of 12000120002020 is 2020002100021.

It can be written as a sum of positive squares in 8 ways, for example, as 5246857522404 + 6753262479616 = 2290602^2 + 2598704^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12000120001988 and 12000120002006.

It is not an unprimeable number, because it can be changed into a prime (12000120002023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135102744 + ... + 135191536.

It is an arithmetic number, because the mean of its divisors is an integer number (526712910885).

Almost surely, 2^{12000120002020} is an apocalyptic number.

12000120002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12000120002020 is an abundant number, since it is smaller than the sum of its proper divisors (13282099720460).

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

12000120002020 is a wasteful number, since it uses less digits than its factorization.

12000120002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110704 (or 110702 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12000120002020 its reverse (2020002100021), we get a palindrome (14020122102041).

The spelling of 12000120002020 in words is "twelve trillion, one hundred twenty million, two thousand, twenty".