241221502255541 has 2 divisors, whose sum is σ = 241221502255542. Its totient is φ = 241221502255540.

The previous prime is 241221502255537. The next prime is 241221502255553. The reversal of 241221502255541 is 145552205122142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185938559693041 + 55282942562500 = 13635929^2 + 7435250^2 .

It is a cyclic number.

It is not a de Polignac number, because 241221502255541 - 2² = 241221502255537 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241221502255501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120610751127770 + 120610751127771.

It is an arithmetic number, because the mean of its divisors is an integer number (120610751127771).

Almost surely, 2^{241221502255541} is an apocalyptic number.

It is an amenable number.

241221502255541 is a deficient number, since it is larger than the sum of its proper divisors (1).

241221502255541 is an equidigital number, since it uses as much as digits as its factorization.

241221502255541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320000, while the sum is 41.

Adding to 241221502255541 its reverse (145552205122142), we get a palindrome (386773707377683).

The spelling of 241221502255541 in words is "two hundred forty-one trillion, two hundred twenty-one billion, five hundred two million, two hundred fifty-five thousand, five hundred forty-one".