200221201001 has 4 divisors (see below), whose sum is σ = 200222162004. Its totient is φ = 200220240000.

The previous prime is 200221200983. The next prime is 200221201003. The reversal of 200221201001 is 100102122002.

It is a happy number.

200221201001 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 brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7447517401 + 192773683600 = 86299^2 + 439060^2 .

It is a cyclic number.

It is not a de Polignac number, because 200221201001 - 2²² = 200217006697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200221201003) 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, 22400 + ... + 633201.

It is an arithmetic number, because the mean of its divisors is an integer number (50055540501).

Almost surely, 2^200221201001 is an apocalyptic number.

It is an amenable number.

200221201001 is a deficient number, since it is larger than the sum of its proper divisors (961003).

200221201001 is an equidigital number, since it uses as much as digits as its factorization.

200221201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961002.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200221201001 its reverse (100102122002), we get a palindrome (300323323003).

The spelling of 200221201001 in words is "two hundred billion, two hundred twenty-one million, two hundred one thousand, one".