21104230432 has 12 divisors (see below), whose sum is σ = 41548953726. Its totient is φ = 10552115200.

The previous prime is 21104230429. The next prime is 21104230447. The reversal of 21104230432 is 23403240112.

It can be written as a sum of positive squares in only one way, i.e., 18269306896 + 2834923536 = 135164^2 + 53244^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329753569 + ... + 329753632.

Almost surely, 2^21104230432 is an apocalyptic number.

It is an amenable number.

21104230432 is a deficient number, since it is larger than the sum of its proper divisors (20444723294).

21104230432 is an equidigital number, since it uses as much as digits as its factorization.

21104230432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659507211 (or 659507203 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21104230432 its reverse (23403240112), we get a palindrome (44507470544).

The spelling of 21104230432 in words is "twenty-one billion, one hundred four million, two hundred thirty thousand, four hundred thirty-two".