21041324304 has 160 divisors (see below), whose sum is σ = 72982662144. Its totient is φ = 5044861440.

The previous prime is 21041324281. The next prime is 21041324309. The reversal of 21041324304 is 40342314012.

It is a super-2 number, since 2×21041324304² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21041324309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170914 + ... + 267009.

Almost surely, 2^21041324304 is an apocalyptic number.

21041324304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21041324304 is an abundant number, since it is smaller than the sum of its proper divisors (51941337840).

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

21041324304 is a wasteful number, since it uses less digits than its factorization.

21041324304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437965 (or 437959 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21041324304 its reverse (40342314012), we get a palindrome (61383638316).

The spelling of 21041324304 in words is "twenty-one billion, forty-one million, three hundred twenty-four thousand, three hundred four".