21242024443443 has 64 divisors (see below), whose sum is σ = 30215324160000. Its totient is φ = 13236439132800.

The previous prime is 21242024443441. The next prime is 21242024443447. The reversal of 21242024443443 is 34434442024212.

It is not a de Polignac number, because 21242024443443 - 2¹ = 21242024443441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21242024443441) 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 63 ways as a sum of consecutive naturals, for example, 2696026578 + ... + 2696034456.

It is an arithmetic number, because the mean of its divisors is an integer number (472114440000).

Almost surely, 2^{21242024443443} is an apocalyptic number.

21242024443443 is a deficient number, since it is larger than the sum of its proper divisors (8973299716557).

21242024443443 is a wasteful number, since it uses less digits than its factorization.

21242024443443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120.

The product of its (nonzero) digits is 589824, while the sum is 39.

Adding to 21242024443443 its reverse (34434442024212), we get a palindrome (55676466467655).

The spelling of 21242024443443 in words is "twenty-one trillion, two hundred forty-two billion, twenty-four million, four hundred forty-three thousand, four hundred forty-three".