241220321520401 has 2 divisors, whose sum is σ = 241220321520402. Its totient is φ = 241220321520400.

The previous prime is 241220321520391. The next prime is 241220321520403. The reversal of 241220321520401 is 104025123022142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153610740240400 + 87609581280001 = 12393980^2 + 9359999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241220321520401 is a prime.

Together with 241220321520403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (241220321520403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120610160760200 + 120610160760201.

It is an arithmetic number, because the mean of its divisors is an integer number (120610160760201).

Almost surely, 2^{241220321520401} is an apocalyptic number.

It is an amenable number.

241220321520401 is a deficient number, since it is larger than the sum of its proper divisors (1).

241220321520401 is an equidigital number, since it uses as much as digits as its factorization.

241220321520401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 241220321520401 its reverse (104025123022142), we get a palindrome (345245444542543).

The spelling of 241220321520401 in words is "two hundred forty-one trillion, two hundred twenty billion, three hundred twenty-one million, five hundred twenty thousand, four hundred one".