20012320203312 has 20 divisors (see below), whose sum is σ = 51698493858680. Its totient is φ = 6670773401088.

The previous prime is 20012320203311. The next prime is 20012320203341. The reversal of 20012320203312 is 21330202321002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20012320203311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208461668737 + ... + 208461668832.

It is an arithmetic number, because the mean of its divisors is an integer number (2584924692934).

Almost surely, 2^{20012320203312} is an apocalyptic number.

It is an amenable number.

20012320203312 is an abundant number, since it is smaller than the sum of its proper divisors (31686173655368).

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

20012320203312 is a wasteful number, since it uses less digits than its factorization.

20012320203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416923337580 (or 416923337574 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20012320203312 its reverse (21330202321002), we get a palindrome (41342522524314).

The spelling of 20012320203312 in words is "twenty trillion, twelve billion, three hundred twenty million, two hundred three thousand, three hundred twelve".