13123123110001 has 4 divisors (see below), whose sum is σ = 13477802113012. Its totient is φ = 12768444106992.

The previous prime is 13123123109983. The next prime is 13123123110017. The reversal of 13123123110001 is 10001132132131.

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 7597873267776 + 5525249842225 = 2756424^2 + 2350585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13123123110001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13123123110061) 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, 177339501450 + ... + 177339501523.

It is an arithmetic number, because the mean of its divisors is an integer number (3369450528253).

Almost surely, 2^{13123123110001} is an apocalyptic number.

It is an amenable number.

13123123110001 is a deficient number, since it is larger than the sum of its proper divisors (354679003011).

13123123110001 is an equidigital number, since it uses as much as digits as its factorization.

13123123110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354679003010.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 13123123110001 its reverse (10001132132131), we get a palindrome (23124255242132).

The spelling of 13123123110001 in words is "thirteen trillion, one hundred twenty-three billion, one hundred twenty-three million, one hundred ten thousand, one".