21241011403303 has 4 divisors (see below), whose sum is σ = 21242302431208. Its totient is φ = 21239720375400.

The previous prime is 21241011403247. The next prime is 21241011403327. The reversal of 21241011403303 is 30330411014212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21241011403303 is a prime.

It is a super-3 number, since 3×21241011403303³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241011403363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645489273 + ... + 645522178.

It is an arithmetic number, because the mean of its divisors is an integer number (5310575607802).

Almost surely, 2^{21241011403303} is an apocalyptic number.

21241011403303 is a deficient number, since it is larger than the sum of its proper divisors (1291027905).

21241011403303 is a wasteful number, since it uses less digits than its factorization.

21241011403303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291027904.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21241011403303 its reverse (30330411014212), we get a palindrome (51571422417515).

The spelling of 21241011403303 in words is "twenty-one trillion, two hundred forty-one billion, eleven million, four hundred three thousand, three hundred three".