1241330221 has 2 divisors, whose sum is σ = 1241330222. Its totient is φ = 1241330220.

The previous prime is 1241330213. The next prime is 1241330231. The reversal of 1241330221 is 1220331421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1207562500 + 33767721 = 34750^2 + 5811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241330221 - 2³ = 1241330213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241330231) 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, 620665110 + 620665111.

It is an arithmetic number, because the mean of its divisors is an integer number (620665111).

Almost surely, 2^1241330221 is an apocalyptic number.

It is an amenable number.

1241330221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241330221 is an equidigital number, since it uses as much as digits as its factorization.

1241330221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1241330221 is about 35232.5165294788. The cubic root of 1241330221 is about 1074.7211019053.

Adding to 1241330221 its reverse (1220331421), we get a palindrome (2461661642).

The spelling of 1241330221 in words is "one billion, two hundred forty-one million, three hundred thirty thousand, two hundred twenty-one".