13020021232 has 10 divisors (see below), whose sum is σ = 25226291168. Its totient is φ = 6510010608.

The previous prime is 13020021191. The next prime is 13020021241. The reversal of 13020021232 is 23212002031.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 813751327 = 13020021232 / (1 + 3 + 0 + 2 + 0 + 0 + 2 + 1 + 2 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406875648 + ... + 406875679.

Almost surely, 2^13020021232 is an apocalyptic number.

It is an amenable number.

13020021232 is a deficient number, since it is larger than the sum of its proper divisors (12206269936).

13020021232 is an equidigital number, since it uses as much as digits as its factorization.

13020021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813751335 (or 813751329 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 13020021232 its reverse (23212002031), we get a palindrome (36232023263).

The spelling of 13020021232 in words is "thirteen billion, twenty million, twenty-one thousand, two hundred thirty-two".