20321012211200 has 60 divisors (see below), whose sum is σ = 50346895364040. Its totient is φ = 8128404879360.

The previous prime is 20321012211151. The next prime is 20321012211221. The reversal of 20321012211200 is 211221012302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 793776740 + ... + 793802339.

It is an arithmetic number, because the mean of its divisors is an integer number (839114922734).

Almost surely, 2^{20321012211200} is an apocalyptic number.

20321012211200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321012211200 is an abundant number, since it is smaller than the sum of its proper divisors (30025883152840).

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

20321012211200 is an equidigital number, since it uses as much as digits as its factorization.

20321012211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587579107 (or 1587579086 counting only the distinct ones).

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

Adding to 20321012211200 its reverse (211221012302), we get a palindrome (20532233223502).

The spelling of 20321012211200 in words is "twenty trillion, three hundred twenty-one billion, twelve million, two hundred eleven thousand, two hundred".