21124311304 has 64 divisors (see below), whose sum is σ = 40997975040. Its totient is φ = 10198487040.

The previous prime is 21124311293. The next prime is 21124311311. The reversal of 21124311304 is 40311342112.

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, 10238577 + ... + 10240639.

It is an arithmetic number, because the mean of its divisors is an integer number (640593360).

Almost surely, 2^21124311304 is an apocalyptic number.

It is an amenable number.

21124311304 is a deficient number, since it is larger than the sum of its proper divisors (19873663736).

21124311304 is a wasteful number, since it uses less digits than its factorization.

21124311304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2466 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21124311304 its reverse (40311342112), we get a palindrome (61435653416).

The spelling of 21124311304 in words is "twenty-one billion, one hundred twenty-four million, three hundred eleven thousand, three hundred four".