13143345012121 has 4 divisors (see below), whose sum is σ = 13143372938532. Its totient is φ = 13143317085712.

The previous prime is 13143345012107. The next prime is 13143345012163. The reversal of 13143345012121 is 12121054334131.

It is a happy number.

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 5349136352400 + 7794208659721 = 2312820^2 + 2791811^2 .

It is a cyclic number.

It is not a de Polignac number, because 13143345012121 - 2²⁹ = 13142808141209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13143345019121) 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, 13244926 + ... + 14202631.

It is an arithmetic number, because the mean of its divisors is an integer number (3285843234633).

Almost surely, 2^{13143345012121} is an apocalyptic number.

It is an amenable number.

13143345012121 is a deficient number, since it is larger than the sum of its proper divisors (27926411).

13143345012121 is an equidigital number, since it uses as much as digits as its factorization.

13143345012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27926410.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 13143345012121 its reverse (12121054334131), we get a palindrome (25264399346252).

The spelling of 13143345012121 in words is "thirteen trillion, one hundred forty-three billion, three hundred forty-five million, twelve thousand, one hundred twenty-one".