13044303431021 has 4 divisors (see below), whose sum is σ = 13054314409632. Its totient is φ = 13034292452412.

The previous prime is 13044303431011. The next prime is 13044303431053. The reversal of 13044303431021 is 12013430344031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13044303431021 - 2⁶ = 13044303430957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044303431011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5005487351 + ... + 5005489956.

It is an arithmetic number, because the mean of its divisors is an integer number (3263578602408).

Almost surely, 2^{13044303431021} is an apocalyptic number.

It is an amenable number.

13044303431021 is a deficient number, since it is larger than the sum of its proper divisors (10010978611).

13044303431021 is a wasteful number, since it uses less digits than its factorization.

13044303431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010978610.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 13044303431021 its reverse (12013430344031), we get a palindrome (25057733775052).

The spelling of 13044303431021 in words is "thirteen trillion, forty-four billion, three hundred three million, four hundred thirty-one thousand, twenty-one".