13151332324421 has 4 divisors (see below), whose sum is σ = 13151587014912. Its totient is φ = 13151077633932.

The previous prime is 13151332324399. The next prime is 13151332324439. The reversal of 13151332324421 is 12442323315131.

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 a de Polignac number, because none of the positive numbers 2^k-13151332324421 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 (13151332324441) 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, 127267775 + ... + 127371068.

It is an arithmetic number, because the mean of its divisors is an integer number (3287896753728).

Almost surely, 2^{13151332324421} is an apocalyptic number.

It is an amenable number.

13151332324421 is a deficient number, since it is larger than the sum of its proper divisors (254690491).

13151332324421 is an equidigital number, since it uses as much as digits as its factorization.

13151332324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254690490.

The product of its digits is 51840, while the sum is 35.

Adding to 13151332324421 its reverse (12442323315131), we get a palindrome (25593655639552).

The spelling of 13151332324421 in words is "thirteen trillion, one hundred fifty-one billion, three hundred thirty-two million, three hundred twenty-four thousand, four hundred twenty-one".