200011211221 has 4 divisors (see below), whose sum is σ = 200123389792. Its totient is φ = 199899032652.

The previous prime is 200011211201. The next prime is 200011211227. The reversal of 200011211221 is 122112110002.

200011211221 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 200011211221 - 2⁵ = 200011211189 is a prime.

It is a super-2 number, since 2×200011211221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200011211227) 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, 56086611 + ... + 56090176.

It is an arithmetic number, because the mean of its divisors is an integer number (50030847448).

Almost surely, 2^200011211221 is an apocalyptic number.

It is an amenable number.

200011211221 is a deficient number, since it is larger than the sum of its proper divisors (112178571).

200011211221 is a wasteful number, since it uses less digits than its factorization.

200011211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112178570.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200011211221 its reverse (122112110002), we get a palindrome (322123321223).

The spelling of 200011211221 in words is "two hundred billion, eleven million, two hundred eleven thousand, two hundred twenty-one".