144240100001321 has 4 divisors (see below), whose sum is σ = 144240712303044. Its totient is φ = 144239487699600.

The previous prime is 144240100001297. The next prime is 144240100001449. The reversal of 144240100001321 is 123100001042441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48978498359296 + 95261601642025 = 6998464^2 + 9760205^2 .

It is a cyclic number.

It is not a de Polignac number, because 144240100001321 - 2³⁸ = 143965222094377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144240100001021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305797370 + ... + 306268691.

It is an arithmetic number, because the mean of its divisors is an integer number (36060178075761).

Almost surely, 2^{144240100001321} is an apocalyptic number.

It is an amenable number.

144240100001321 is a deficient number, since it is larger than the sum of its proper divisors (612301723).

144240100001321 is an equidigital number, since it uses as much as digits as its factorization.

144240100001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612301722.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 144240100001321 its reverse (123100001042441), we get a palindrome (267340101043762).

The spelling of 144240100001321 in words is "one hundred forty-four trillion, two hundred forty billion, one hundred million, one thousand, three hundred twenty-one".