21024325244 has 12 divisors (see below), whose sum is σ = 39622766904. Its totient is φ = 9703534704.

The previous prime is 21024325123. The next prime is 21024325297. The reversal of 21024325244 is 44252342012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202156922 + ... + 202157025.

It is an arithmetic number, because the mean of its divisors is an integer number (3301897242).

Almost surely, 2^21024325244 is an apocalyptic number.

It is an amenable number.

21024325244 is a deficient number, since it is larger than the sum of its proper divisors (18598441660).

21024325244 is a wasteful number, since it uses less digits than its factorization.

21024325244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404313964 (or 404313962 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 21024325244 its reverse (44252342012), we get a palindrome (65276667256).

The spelling of 21024325244 in words is "twenty-one billion, twenty-four million, three hundred twenty-five thousand, two hundred forty-four".