200211022220021 has 4 divisors (see below), whose sum is σ = 200220117368652. Its totient is φ = 200201927071392.

The previous prime is 200211022219991. The next prime is 200211022220029. The reversal of 200211022220021 is 120022220112002.

It is a happy number.

200211022220021 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.

It can be written as a sum of positive squares in 2 ways, for example, as 163906950838225 + 36304071381796 = 12802615^2 + 6025286^2 .

It is a cyclic number.

It is not a de Polignac number, because 200211022220021 - 2³⁴ = 200193842350837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211022220029) 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, 4547541296 + ... + 4547585321.

It is an arithmetic number, because the mean of its divisors is an integer number (50055029342163).

Almost surely, 2^{200211022220021} is an apocalyptic number.

It is an amenable number.

200211022220021 is a deficient number, since it is larger than the sum of its proper divisors (9095148631).

200211022220021 is an equidigital number, since it uses as much as digits as its factorization.

200211022220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9095148630.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 200211022220021 its reverse (120022220112002), we get a palindrome (320233242332023).

The spelling of 200211022220021 in words is "two hundred trillion, two hundred eleven billion, twenty-two million, two hundred twenty thousand, twenty-one".