200016221 has 2 divisors, whose sum is σ = 200016222. Its totient is φ = 200016220.

The previous prime is 200016217. The next prime is 200016251. The reversal of 200016221 is 122610002.

200016221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125193721 + 74822500 = 11189^2 + 8650^2 .

It is a cyclic number.

It is not a de Polignac number, because 200016221 - 2² = 200016217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200016196 and 200016205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200016251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100008110 + 100008111.

It is an arithmetic number, because the mean of its divisors is an integer number (100008111).

Almost surely, 2^200016221 is an apocalyptic number.

It is an amenable number.

200016221 is a deficient number, since it is larger than the sum of its proper divisors (1).

200016221 is an equidigital number, since it uses as much as digits as its factorization.

200016221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 200016221 is about 14142.7091110579. The cubic root of 200016221 is about 584.8193573791.

Adding to 200016221 its reverse (122610002), we get a palindrome (322626223).

The spelling of 200016221 in words is "two hundred million, sixteen thousand, two hundred twenty-one".