200220202210021 has 4 divisors (see below), whose sum is σ = 228823088240032. Its totient is φ = 171617316180012.

The previous prime is 200220202210001. The next prime is 200220202210031. The reversal of 200220202210021 is 120012202022002.

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 200220202210021 - 2²¹ = 200220200112869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200220202209977 and 200220202210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200220202210001) 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 3 ways as a sum of consecutive naturals, for example, 14301443014995 + ... + 14301443015008.

It is an arithmetic number, because the mean of its divisors is an integer number (57205772060008).

Almost surely, 2^{200220202210021} is an apocalyptic number.

It is an amenable number.

200220202210021 is a deficient number, since it is larger than the sum of its proper divisors (28602886030011).

200220202210021 is an equidigital number, since it uses as much as digits as its factorization.

200220202210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28602886030010.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 200220202210021 its reverse (120012202022002), we get a palindrome (320232404232023).

The spelling of 200220202210021 in words is "two hundred trillion, two hundred twenty billion, two hundred two million, two hundred ten thousand, twenty-one".