13530430021 has 8 divisors (see below), whose sum is σ = 13547547200. Its totient is φ = 13513327200.

The previous prime is 13530429977. The next prime is 13530430051. The reversal of 13530430021 is 12003403531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13530430021 - 2¹¹ = 13530427973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13530429974 and 13530430001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530430051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5302696 + ... + 5305246.

It is an arithmetic number, because the mean of its divisors is an integer number (1693443400).

Almost surely, 2^13530430021 is an apocalyptic number.

It is an amenable number.

13530430021 is a deficient number, since it is larger than the sum of its proper divisors (17117179).

13530430021 is a wasteful number, since it uses less digits than its factorization.

13530430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7179.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 13530430021 its reverse (12003403531), we get a palindrome (25533833552).

The spelling of 13530430021 in words is "thirteen billion, five hundred thirty million, four hundred thirty thousand, twenty-one".