13443505530121 has 2 divisors, whose sum is σ = 13443505530122. Its totient is φ = 13443505530120.

The previous prime is 13443505530109. The next prime is 13443505530173. The reversal of 13443505530121 is 12103550534431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9830331832896 + 3613173697225 = 3135336^2 + 1900835^2 .

It is a cyclic number.

It is not a de Polignac number, because 13443505530121 - 2¹⁵ = 13443505497353 is a prime.

It is not a weakly prime, because it can be changed into another prime (13443505530101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721752765060 + 6721752765061.

It is an arithmetic number, because the mean of its divisors is an integer number (6721752765061).

Almost surely, 2^{13443505530121} is an apocalyptic number.

It is an amenable number.

13443505530121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13443505530121 is an equidigital number, since it uses as much as digits as its factorization.

13443505530121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 13443505530121 in words is "thirteen trillion, four hundred forty-three billion, five hundred five million, five hundred thirty thousand, one hundred twenty-one".