2200100200021 has 4 divisors (see below), whose sum is σ = 2200108610700. Its totient is φ = 2200091789344.

The previous prime is 2200100200009. The next prime is 2200100200043. The reversal of 2200100200021 is 1200020010022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 358214220100 + 1841885979921 = 598510^2 + 1357161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2200100200021 - 2¹⁹ = 2200099675733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2200100199980 and 2200100200007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200100200061) 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, 3799936 + ... + 4340473.

It is an arithmetic number, because the mean of its divisors is an integer number (550027152675).

Almost surely, 2^{2200100200021} is an apocalyptic number.

It is an amenable number.

2200100200021 is a deficient number, since it is larger than the sum of its proper divisors (8410679).

2200100200021 is an equidigital number, since it uses as much as digits as its factorization.

2200100200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410678.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2200100200021 its reverse (1200020010022), we get a palindrome (3400120210043).

The spelling of 2200100200021 in words is "two trillion, two hundred billion, one hundred million, two hundred thousand, twenty-one".