200220100021 has 4 divisors (see below), whose sum is σ = 200445828192. Its totient is φ = 199994371852.

The previous prime is 200220100013. The next prime is 200220100027. The reversal of 200220100021 is 120001022002.

200220100021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 200220100021 - 2³ = 200220100013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200220099980 and 200220100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200220100027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112862755 + ... + 112864528.

It is an arithmetic number, because the mean of its divisors is an integer number (50111457048).

Almost surely, 2^200220100021 is an apocalyptic number.

It is an amenable number.

200220100021 is a deficient number, since it is larger than the sum of its proper divisors (225728171).

200220100021 is an equidigital number, since it uses as much as digits as its factorization.

200220100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225728170.

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

Adding to 200220100021 its reverse (120001022002), we get a palindrome (320221122023).

The spelling of 200220100021 in words is "two hundred billion, two hundred twenty million, one hundred thousand, twenty-one".