20324203200021 has 8 divisors (see below), whose sum is σ = 30970214400064. Its totient is φ = 11613830400000.

The previous prime is 20324203199983. The next prime is 20324203200043. The reversal of 20324203200021 is 12000230242302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20324203200021 - 2⁶ = 20324203199957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 967819200001 = 20324203200021 / (2 + 0 + 3 + 2 + 4 + 2 + 0 + 3 + 2 + 0 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20324203200071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 483909599980 + ... + 483909600021.

It is an arithmetic number, because the mean of its divisors is an integer number (3871276800008).

Almost surely, 2^{20324203200021} is an apocalyptic number.

20324203200021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20324203200021 is a deficient number, since it is larger than the sum of its proper divisors (10646011200043).

20324203200021 is an equidigital number, since it uses as much as digits as its factorization.

20324203200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967819200011.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20324203200021 its reverse (12000230242302), we get a palindrome (32324433442323).

The spelling of 20324203200021 in words is "twenty trillion, three hundred twenty-four billion, two hundred three million, two hundred thousand, twenty-one".