241221513242545 has 16 divisors (see below), whose sum is σ = 318390649493760. Its totient is φ = 175433827807920.

The previous prime is 241221513242527. The next prime is 241221513242573. The reversal of 241221513242545 is 545242315122142.

It is not a de Polignac number, because 241221513242545 - 2⁷ = 241221513242417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18123322665 + ... + 18123335974.

It is an arithmetic number, because the mean of its divisors is an integer number (19899415593360).

Almost surely, 2^{241221513242545} is an apocalyptic number.

It is an amenable number.

241221513242545 is a deficient number, since it is larger than the sum of its proper divisors (77169136251215).

241221513242545 is an equidigital number, since it uses as much as digits as its factorization.

241221513242545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36246658677 (or 36246658655 counting only the distinct ones).

The product of its digits is 768000, while the sum is 43.

Adding to 241221513242545 its reverse (545242315122142), we get a palindrome (786463828364687).

The spelling of 241221513242545 in words is "two hundred forty-one trillion, two hundred twenty-one billion, five hundred thirteen million, two hundred forty-two thousand, five hundred forty-five".