200222221 has 2 divisors, whose sum is σ = 200222222. Its totient is φ = 200222220.

The previous prime is 200222219. The next prime is 200222249. The reversal of 200222221 is 122222002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169364196 + 30858025 = 13014^2 + 5555^2 .

It is a cyclic number.

It is not a de Polignac number, because 200222221 - 2¹ = 200222219 is a prime.

Together with 200222219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200222251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100111110 + 100111111.

It is an arithmetic number, because the mean of its divisors is an integer number (100111111).

Almost surely, 2^200222221 is an apocalyptic number.

It is an amenable number.

200222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

200222221 is an equidigital number, since it uses as much as digits as its factorization.

200222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 200222221 is about 14149.9901413393. The cubic root of 200222221 is about 585.0200601882.

Adding to 200222221 its reverse (122222002), we get a palindrome (322444223).

The spelling of 200222221 in words is "two hundred million, two hundred twenty-two thousand, two hundred twenty-one".