201303230221 has 2 divisors, whose sum is σ = 201303230222. Its totient is φ = 201303230220.

The previous prime is 201303230171. The next prime is 201303230231. The reversal of 201303230221 is 122032303102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130328942121 + 70974288100 = 361011^2 + 266410^2 .

It is a cyclic number.

It is not a de Polignac number, because 201303230221 - 2²¹ = 201301133069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201303230231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100651615110 + 100651615111.

It is an arithmetic number, because the mean of its divisors is an integer number (100651615111).

Almost surely, 2^201303230221 is an apocalyptic number.

It is an amenable number.

201303230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201303230221 is an equidigital number, since it uses as much as digits as its factorization.

201303230221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 201303230221 its reverse (122032303102), we get a palindrome (323335533323).

The spelling of 201303230221 in words is "two hundred one billion, three hundred three million, two hundred thirty thousand, two hundred twenty-one".