12001020112020 has 24 divisors (see below), whose sum is σ = 33602856313824. Its totient is φ = 3200272029856.

The previous prime is 12001020111943. The next prime is 12001020112057. The reversal of 12001020112020 is 2021102010021.

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 = 12001020111987 and 12001020112005.

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, 100008500874 + ... + 100008500993.

It is an arithmetic number, because the mean of its divisors is an integer number (1400119013076).

Almost surely, 2^{12001020112020} is an apocalyptic number.

12001020112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001020112020 is an abundant number, since it is smaller than the sum of its proper divisors (21601836201804).

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

12001020112020 is a wasteful number, since it uses less digits than its factorization.

12001020112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200017001879 (or 200017001877 counting only the distinct ones).

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

Adding to 12001020112020 its reverse (2021102010021), we get a palindrome (14022122122041).

The spelling of 12001020112020 in words is "twelve trillion, one billion, twenty million, one hundred twelve thousand, twenty".