12001231122020 has 48 divisors (see below), whose sum is σ = 28809332778240. Its totient is φ = 4113796658304.

The previous prime is 12001231122007. The next prime is 12001231122029. The reversal of 12001231122020 is 2022113210021.

It is a self number, because there is not a number n which added to its sum of digits gives 12001231122020.

It is not an unprimeable number, because it can be changed into a prime (12001231122029) 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, 8856560 + ... + 10121319.

It is an arithmetic number, because the mean of its divisors is an integer number (600194432880).

Almost surely, 2^{12001231122020} is an apocalyptic number.

12001231122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001231122020 is an abundant number, since it is smaller than the sum of its proper divisors (16808101656220).

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

12001231122020 is a wasteful number, since it uses less digits than its factorization.

12001231122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18982412 (or 18982410 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12001231122020 its reverse (2022113210021), we get a palindrome (14023344332041).

The spelling of 12001231122020 in words is "twelve trillion, one billion, two hundred thirty-one million, one hundred twenty-two thousand, twenty".