21041241303 has 4 divisors (see below), whose sum is σ = 28054988408. Its totient is φ = 14027494200.

The previous prime is 21041241293. The next prime is 21041241341. The reversal of 21041241303 is 30314214012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21041241303 - 2⁶ = 21041241239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21041241303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041241373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3506873548 + ... + 3506873553.

It is an arithmetic number, because the mean of its divisors is an integer number (7013747102).

Almost surely, 2^21041241303 is an apocalyptic number.

21041241303 is a deficient number, since it is larger than the sum of its proper divisors (7013747105).

21041241303 is an equidigital number, since it uses as much as digits as its factorization.

21041241303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7013747104.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21041241303 its reverse (30314214012), we get a palindrome (51355455315).

The spelling of 21041241303 in words is "twenty-one billion, forty-one million, two hundred forty-one thousand, three hundred three".