200021111211 has 4 divisors (see below), whose sum is σ = 266694814952. Its totient is φ = 133347407472.

The previous prime is 200021111201. The next prime is 200021111237. The reversal of 200021111211 is 112111120002.

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

It is not a de Polignac number, because 200021111211 - 2⁹ = 200021110699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200021111201) 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, 33336851866 + ... + 33336851871.

It is an arithmetic number, because the mean of its divisors is an integer number (66673703738).

Almost surely, 2^200021111211 is an apocalyptic number.

200021111211 is a deficient number, since it is larger than the sum of its proper divisors (66673703741).

200021111211 is an equidigital number, since it uses as much as digits as its factorization.

200021111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66673703740.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 200021111211 its reverse (112111120002), we get a palindrome (312132231213).

The spelling of 200021111211 in words is "two hundred billion, twenty-one million, one hundred eleven thousand, two hundred eleven".