201200221 has 2 divisors, whose sum is σ = 201200222. Its totient is φ = 201200220.

The previous prime is 201200183. The next prime is 201200249. The reversal of 201200221 is 122002102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113103225 + 88096996 = 10635^2 + 9386^2 .

It is a cyclic number.

It is not a de Polignac number, because 201200221 - 2¹³ = 201192029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201200198 and 201200207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201200821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600110 + 100600111.

It is an arithmetic number, because the mean of its divisors is an integer number (100600111).

Almost surely, 2^201200221 is an apocalyptic number.

It is an amenable number.

201200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201200221 is an equidigital number, since it uses as much as digits as its factorization.

201200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 201200221 is about 14184.5063713899. The cubic root of 201200221 is about 585.9710378352.

Adding to 201200221 its reverse (122002102), we get a palindrome (323202323).

The spelling of 201200221 in words is "two hundred one million, two hundred thousand, two hundred twenty-one".