21041304403 has 8 divisors (see below), whose sum is σ = 24075076608. Its totient is φ = 18014500104.

The previous prime is 21041304371. The next prime is 21041304407. The reversal of 21041304403 is 30440314012.

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 21041304403 - 2⁵ = 21041304371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21041304407) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1735501 + ... + 1747582.

It is an arithmetic number, because the mean of its divisors is an integer number (3009384576).

Almost surely, 2^21041304403 is an apocalyptic number.

21041304403 is a deficient number, since it is larger than the sum of its proper divisors (3033772205).

21041304403 is an equidigital number, since it uses as much as digits as its factorization.

21041304403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3483953.

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

Adding to 21041304403 its reverse (30440314012), we get a palindrome (51481618415).

The spelling of 21041304403 in words is "twenty-one billion, forty-one million, three hundred four thousand, four hundred three".