12012311030020 has 24 divisors (see below), whose sum is σ = 28829546472384. Its totient is φ = 4118506638816.

The previous prime is 12012311030003. The next prime is 12012311030047. The reversal of 12012311030020 is 2003011321021.

It is a junction number, because it is equal to n+sod(n) for n = 12012311029976 and 12012311030003.

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, 42901110682 + ... + 42901110961.

It is an arithmetic number, because the mean of its divisors is an integer number (1201231103016).

Almost surely, 2^{12012311030020} is an apocalyptic number.

12012311030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012311030020 is an abundant number, since it is smaller than the sum of its proper divisors (16817235442364).

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

12012311030020 is a wasteful number, since it uses less digits than its factorization.

12012311030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85802221659 (or 85802221657 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12012311030020 its reverse (2003011321021), we get a palindrome (14015322351041).

The spelling of 12012311030020 in words is "twelve trillion, twelve billion, three hundred eleven million, thirty thousand, twenty".