21243322341 has 24 divisors (see below), whose sum is σ = 30910973184. Its totient is φ = 14058061920.

The previous prime is 21243322319. The next prime is 21243322357. The reversal of 21243322341 is 14322334212.

21243322341 is a `hidden beast` number, since 2 + 1 + 2 + 433 + 223 + 4 + 1 = 666.

It is not a de Polignac number, because 21243322341 - 2⁶ = 21243322277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243322141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1128436 + ... + 1147106.

It is an arithmetic number, because the mean of its divisors is an integer number (1287957216).

Almost surely, 2^21243322341 is an apocalyptic number.

It is an amenable number.

21243322341 is a deficient number, since it is larger than the sum of its proper divisors (9667650843).

21243322341 is a wasteful number, since it uses less digits than its factorization.

21243322341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19601 (or 19598 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 21243322341 its reverse (14322334212), we get a palindrome (35565656553).

The spelling of 21243322341 in words is "twenty-one billion, two hundred forty-three million, three hundred twenty-two thousand, three hundred forty-one".