221050240504 has 8 divisors (see below), whose sum is σ = 414469200960. Its totient is φ = 110525120248.

The previous prime is 221050240487. The next prime is 221050240511. The reversal of 221050240504 is 405042050122.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13815640024 + ... + 13815640039.

It is an arithmetic number, because the mean of its divisors is an integer number (51808650120).

Almost surely, 2^221050240504 is an apocalyptic number.

It is an amenable number.

221050240504 is a deficient number, since it is larger than the sum of its proper divisors (193418960456).

221050240504 is a wasteful number, since it uses less digits than its factorization.

221050240504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27631280069 (or 27631280065 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 221050240504 its reverse (405042050122), we get a palindrome (626092290626).

The spelling of 221050240504 in words is "two hundred twenty-one billion, fifty million, two hundred forty thousand, five hundred four".