200000000221 has 4 divisors (see below), whose sum is σ = 228571428832. Its totient is φ = 171428571612.

The previous prime is 200000000201. The next prime is 200000000279. The reversal of 200000000221 is 122000000002.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122000000002 = 2 ⋅61000000001.

It is a cyclic number.

It is not a de Polignac number, because 200000000221 - 2⁷ = 200000000093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7), and also a Moran number because the ratio is a prime number: 28571428603 = 200000000221 / (2 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000000201) 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, 14285714295 + ... + 14285714308.

It is an arithmetic number, because the mean of its divisors is an integer number (57142857208).

Almost surely, 2^200000000221 is an apocalyptic number.

It is an amenable number.

200000000221 is a deficient number, since it is larger than the sum of its proper divisors (28571428611).

200000000221 is an equidigital number, since it uses as much as digits as its factorization.

200000000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28571428610.

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 200000000221 its reverse (122000000002), we get a palindrome (322000000223).

The spelling of 200000000221 in words is "two hundred billion, two hundred twenty-one", and thus it is an aban number.