21243024341 has 48 divisors (see below), whose sum is σ = 27740117952. Its totient is φ = 16074374400.

The previous prime is 21243024311. The next prime is 21243024343. The reversal of 21243024341 is 14342034212.

It is not a de Polignac number, because 21243024341 - 2⁶ = 21243024277 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 21243024341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243024343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19364105 + ... + 19365201.

It is an arithmetic number, because the mean of its divisors is an integer number (577919124).

Almost surely, 2^21243024341 is an apocalyptic number.

It is an amenable number.

21243024341 is a deficient number, since it is larger than the sum of its proper divisors (6497093611).

21243024341 is a wasteful number, since it uses less digits than its factorization.

21243024341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21243024341 its reverse (14342034212), we get a palindrome (35585058553).

The spelling of 21243024341 in words is "twenty-one billion, two hundred forty-three million, twenty-four thousand, three hundred forty-one".