21301424430 has 96 divisors (see below), whose sum is σ = 60516221472. Its totient is φ = 4766741760.

The previous prime is 21301424429. The next prime is 21301424471. The reversal of 21301424430 is 3442410312.

It is a self number, because there is not a number n which added to its sum of digits gives 21301424430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 178509 + ... + 272888.

It is an arithmetic number, because the mean of its divisors is an integer number (630377307).

Almost surely, 2^21301424430 is an apocalyptic number.

21301424430 is an abundant number, since it is smaller than the sum of its proper divisors (39214797042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21301424430 is a wasteful number, since it uses less digits than its factorization.

21301424430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451442 (or 451431 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21301424430 its reverse (3442410312), we get a palindrome (24743834742).

The spelling of 21301424430 in words is "twenty-one billion, three hundred one million, four hundred twenty-four thousand, four hundred thirty".