221604410124 has 36 divisors (see below), whose sum is σ = 561828949864. Its totient is φ = 73648939392.

The previous prime is 221604410099. The next prime is 221604410141. The reversal of 221604410124 is 421014406122.

221604410124 is a `hidden beast` number, since 2 + 2 + 1 + 604 + 41 + 0 + 12 + 4 = 666.

221604410124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9120922 + ... + 9145185.

Almost surely, 2^221604410124 is an apocalyptic number.

It is an amenable number.

221604410124 is an abundant number, since it is smaller than the sum of its proper divisors (340224539740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221604410124 is a wasteful number, since it uses less digits than its factorization.

221604410124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18266454 (or 18266449 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 221604410124 its reverse (421014406122), we get a palindrome (642618816246).

The spelling of 221604410124 in words is "two hundred twenty-one billion, six hundred four million, four hundred ten thousand, one hundred twenty-four".