21244024334 has 48 divisors (see below), whose sum is σ = 35146549584. Its totient is φ = 9623577600.

The previous prime is 21244024301. The next prime is 21244024337. The reversal of 21244024334 is 43342044212.

It is a junction number, because it is equal to n+sod(n) for n = 21244024297 and 21244024306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244024337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13875149 + ... + 13876679.

It is an arithmetic number, because the mean of its divisors is an integer number (732219783).

Almost surely, 2^21244024334 is an apocalyptic number.

21244024334 is a deficient number, since it is larger than the sum of its proper divisors (13902525250).

21244024334 is a wasteful number, since it uses less digits than its factorization.

21244024334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293 (or 2280 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 21244024334 its reverse (43342044212), we get a palindrome (64586068546).

The spelling of 21244024334 in words is "twenty-one billion, two hundred forty-four million, twenty-four thousand, three hundred thirty-four".