100320200021 has 4 divisors (see below), whose sum is σ = 104681947872. Its totient is φ = 95958452172.

The previous prime is 100320200011. The next prime is 100320200033. The reversal of 100320200021 is 120002023001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100320200021 - 2⁶ = 100320199957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100320199975 and 100320200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100320200011) 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, 2180873891 + ... + 2180873936.

It is an arithmetic number, because the mean of its divisors is an integer number (26170486968).

Almost surely, 2^100320200021 is an apocalyptic number.

It is an amenable number.

100320200021 is a deficient number, since it is larger than the sum of its proper divisors (4361747851).

100320200021 is an equidigital number, since it uses as much as digits as its factorization.

100320200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361747850.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 100320200021 its reverse (120002023001), we get a palindrome (220322223022).

The spelling of 100320200021 in words is "one hundred billion, three hundred twenty million, two hundred thousand, twenty-one".