21104040332 has 6 divisors (see below), whose sum is σ = 36932070588. Its totient is φ = 10552020164.

The previous prime is 21104040317. The next prime is 21104040367. The reversal of 21104040332 is 23304040112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2638005038 + ... + 2638005045.

It is an arithmetic number, because the mean of its divisors is an integer number (6155345098).

Almost surely, 2^21104040332 is an apocalyptic number.

It is an amenable number.

21104040332 is a deficient number, since it is larger than the sum of its proper divisors (15828030256).

21104040332 is a wasteful number, since it uses less digits than its factorization.

21104040332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276010087 (or 5276010085 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21104040332 its reverse (23304040112), we get a palindrome (44408080444).

The spelling of 21104040332 in words is "twenty-one billion, one hundred four million, forty thousand, three hundred thirty-two".