13244232421 has 16 divisors (see below), whose sum is σ = 15264000000. Its totient is φ = 11256779520.

The previous prime is 13244232349. The next prime is 13244232431. The reversal of 13244232421 is 12423244231.

It is not a de Polignac number, because 13244232421 - 2¹⁵ = 13244199653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13244232421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13244232431) 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 15 ways as a sum of consecutive naturals, for example, 408205 + ... + 439453.

It is an arithmetic number, because the mean of its divisors is an integer number (954000000).

Almost surely, 2^13244232421 is an apocalyptic number.

It is an amenable number.

13244232421 is a deficient number, since it is larger than the sum of its proper divisors (2019767579).

13244232421 is a wasteful number, since it uses less digits than its factorization.

13244232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31764.

The product of its digits is 9216, while the sum is 28.

Adding to 13244232421 its reverse (12423244231), we get a palindrome (25667476652).

The spelling of 13244232421 in words is "thirteen billion, two hundred forty-four million, two hundred thirty-two thousand, four hundred twenty-one".