21303425324 has 48 divisors (see below), whose sum is σ = 39408687360. Its totient is φ = 10065021120.

The previous prime is 21303425323. The next prime is 21303425327. The reversal of 21303425324 is 42352430312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21303425323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688907 + ... + 719165.

It is an arithmetic number, because the mean of its divisors is an integer number (821014320).

Almost surely, 2^21303425324 is an apocalyptic number.

It is an amenable number.

21303425324 is a deficient number, since it is larger than the sum of its proper divisors (18105262036).

21303425324 is a wasteful number, since it uses less digits than its factorization.

21303425324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30438 (or 30436 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 21303425324 its reverse (42352430312), we get a palindrome (63655855636).

The spelling of 21303425324 in words is "twenty-one billion, three hundred three million, four hundred twenty-five thousand, three hundred twenty-four".