21243023024203 has 8 divisors (see below), whose sum is σ = 22492783263600. Its totient is φ = 19993281745920.

The previous prime is 21243023024191. The next prime is 21243023024287. The reversal of 21243023024203 is 30242032034212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21243023024203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21243023024303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2400678 + ... + 6946171.

It is an arithmetic number, because the mean of its divisors is an integer number (2811597907950).

Almost surely, 2^{21243023024203} is an apocalyptic number.

21243023024203 is a deficient number, since it is larger than the sum of its proper divisors (1249760239397).

21243023024203 is a wasteful number, since it uses less digits than its factorization.

21243023024203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480557.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21243023024203 its reverse (30242032034212), we get a palindrome (51485055058415).

The spelling of 21243023024203 in words is "twenty-one trillion, two hundred forty-three billion, twenty-three million, twenty-four thousand, two hundred three".