21232224305 has 8 divisors (see below), whose sum is σ = 25479506112. Its totient is φ = 16985221488.

The previous prime is 21232224287. The next prime is 21232224427. The reversal of 21232224305 is 50342223212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21232224305 - 2⁸ = 21232224049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177134 + ... + 271736.

It is an arithmetic number, because the mean of its divisors is an integer number (3184938264).

Almost surely, 2^21232224305 is an apocalyptic number.

It is an amenable number.

21232224305 is a deficient number, since it is larger than the sum of its proper divisors (4247281807).

21232224305 is an equidigital number, since it uses as much as digits as its factorization.

21232224305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139495.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 21232224305 its reverse (50342223212), we get a palindrome (71574447517).

The spelling of 21232224305 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty-four thousand, three hundred five".