21232241304 has 64 divisors (see below), whose sum is σ = 54454589280. Its totient is φ = 6894720000.

The previous prime is 21232241293. The next prime is 21232241351. The reversal of 21232241304 is 40314223212.

It is a happy number.

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

It is a congruent number.

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, 674394 + ... + 705174.

Almost surely, 2^21232241304 is an apocalyptic number.

21232241304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21232241304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27227294640).

21232241304 is an abundant number, since it is smaller than the sum of its proper divisors (33222347976).

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

21232241304 is a wasteful number, since it uses less digits than its factorization.

21232241304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31532 (or 31528 counting only the distinct ones).

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

Adding to 21232241304 its reverse (40314223212), we get a palindrome (61546464516).

The spelling of 21232241304 in words is "twenty-one billion, two hundred thirty-two million, two hundred forty-one thousand, three hundred four".