202200221 has 2 divisors, whose sum is σ = 202200222. Its totient is φ = 202200220.

The previous prime is 202200217. The next prime is 202200239. The reversal of 202200221 is 122002202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102799321 + 99400900 = 10139^2 + 9970^2 .

It is a cyclic number.

It is not a de Polignac number, because 202200221 - 2² = 202200217 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202200821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101100110 + 101100111.

It is an arithmetic number, because the mean of its divisors is an integer number (101100111).

Almost surely, 2^202200221 is an apocalyptic number.

It is an amenable number.

202200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202200221 is an equidigital number, since it uses as much as digits as its factorization.

202200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 202200221 is about 14219.7124091875. The cubic root of 202200221 is about 586.9402264940.

Adding to 202200221 its reverse (122002202), we get a palindrome (324202423).

The spelling of 202200221 in words is "two hundred two million, two hundred thousand, two hundred twenty-one".