241220311909 has 2 divisors, whose sum is σ = 241220311910. Its totient is φ = 241220311908.

The previous prime is 241220311907. The next prime is 241220311919. The reversal of 241220311909 is 909113022142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231508209409 + 9712102500 = 481153^2 + 98550^2 .

It is a cyclic number.

It is not a de Polignac number, because 241220311909 - 2¹ = 241220311907 is a prime.

Together with 241220311907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241220311903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120610155954 + 120610155955.

It is an arithmetic number, because the mean of its divisors is an integer number (120610155955).

Almost surely, 2^241220311909 is an apocalyptic number.

It is an amenable number.

241220311909 is a deficient number, since it is larger than the sum of its proper divisors (1).

241220311909 is an equidigital number, since it uses as much as digits as its factorization.

241220311909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 241220311909 in words is "two hundred forty-one billion, two hundred twenty million, three hundred eleven thousand, nine hundred nine".