1241310221 has 2 divisors, whose sum is σ = 1241310222. Its totient is φ = 1241310220.

The previous prime is 1241310179. The next prime is 1241310241. The reversal of 1241310221 is 1220131421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1169298025 + 72012196 = 34195^2 + 8486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241310221 - 2⁶ = 1241310157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1241310221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241310241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620655110 + 620655111.

It is an arithmetic number, because the mean of its divisors is an integer number (620655111).

Almost surely, 2^1241310221 is an apocalyptic number.

It is an amenable number.

1241310221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241310221 is an equidigital number, since it uses as much as digits as its factorization.

1241310221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1241310221 is about 35232.2326996175. The cubic root of 1241310221 is about 1074.7153299957.

Adding to 1241310221 its reverse (1220131421), we get a palindrome (2461441642).

The spelling of 1241310221 in words is "one billion, two hundred forty-one million, three hundred ten thousand, two hundred twenty-one".