12321001112020 has 24 divisors (see below), whose sum is σ = 26130281570568. Its totient is φ = 4879604400000.

The previous prime is 12321001111873. The next prime is 12321001112033. The reversal of 12321001112020 is 2021110012321.

It can be written as a sum of positive squares in 4 ways, for example, as 4584514757904 + 7736486354116 = 2141148^2 + 2781454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12321001111985 and 12321001112003.

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, 3049750731 + ... + 3049754770.

It is an arithmetic number, because the mean of its divisors is an integer number (1088761732107).

Almost surely, 2^{12321001112020} is an apocalyptic number.

12321001112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321001112020 is an abundant number, since it is smaller than the sum of its proper divisors (13809280458548).

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

12321001112020 is a wasteful number, since it uses less digits than its factorization.

12321001112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099505611 (or 6099505609 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12321001112020 its reverse (2021110012321), we get a palindrome (14342111124341).

The spelling of 12321001112020 in words is "twelve trillion, three hundred twenty-one billion, one million, one hundred twelve thousand, twenty".