20100000200021 has 8 divisors (see below), whose sum is σ = 22975677304320. Its totient is φ = 17225385221808.

The previous prime is 20100000200009. The next prime is 20100000200051. The reversal of 20100000200021 is 12000200000102.

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

It is a cyclic number.

It is not a de Polignac number, because 20100000200021 - 2³⁸ = 19825122293077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100000199981 and 20100000200008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100000200051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265490966 + ... + 265566663.

It is an arithmetic number, because the mean of its divisors is an integer number (2871959663040).

Almost surely, 2^{20100000200021} is an apocalyptic number.

It is an amenable number.

20100000200021 is a deficient number, since it is larger than the sum of its proper divisors (2875677104299).

20100000200021 is an equidigital number, since it uses as much as digits as its factorization.

20100000200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531063043.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20100000200021 its reverse (12000200000102), we get a palindrome (32100200200123).

The spelling of 20100000200021 in words is "twenty trillion, one hundred billion, two hundred thousand, twenty-one".