241221502505545 has 32 divisors (see below), whose sum is σ = 313126100614656. Its totient is φ = 177697755648000.

The previous prime is 241221502505539. The next prime is 241221502505569. The reversal of 241221502505545 is 545505205122142.

It is not a de Polignac number, because 241221502505545 - 2⁵ = 241221502505513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411550 + ... + 21968440.

It is an arithmetic number, because the mean of its divisors is an integer number (9785190644208).

Almost surely, 2^{241221502505545} is an apocalyptic number.

It is an amenable number.

241221502505545 is a deficient number, since it is larger than the sum of its proper divisors (71904598109111).

241221502505545 is a wasteful number, since it uses less digits than its factorization.

241221502505545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21559761.

The product of its (nonzero) digits is 800000, while the sum is 43.

Adding to 241221502505545 its reverse (545505205122142), we get a palindrome (786726707627687).

The spelling of 241221502505545 in words is "two hundred forty-one trillion, two hundred twenty-one billion, five hundred two million, five hundred five thousand, five hundred forty-five".