13221452453 has 16 divisors (see below), whose sum is σ = 14738561280. Its totient is φ = 11757158400.

The previous prime is 13221452443. The next prime is 13221452479. The reversal of 13221452453 is 35425412231.

It is a cyclic number.

It is not a de Polignac number, because 13221452453 - 2⁸ = 13221452197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221452443) 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, 1069733 + ... + 1082021.

It is an arithmetic number, because the mean of its divisors is an integer number (921160080).

Almost surely, 2^13221452453 is an apocalyptic number.

It is an amenable number.

13221452453 is a deficient number, since it is larger than the sum of its proper divisors (1517108827).

13221452453 is a wasteful number, since it uses less digits than its factorization.

13221452453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428.

The product of its digits is 28800, while the sum is 32.

Adding to 13221452453 its reverse (35425412231), we get a palindrome (48646864684).

The spelling of 13221452453 in words is "thirteen billion, two hundred twenty-one million, four hundred fifty-two thousand, four hundred fifty-three".