13121301131101 has 4 divisors (see below), whose sum is σ = 13139201951932. Its totient is φ = 13103400310272.

The previous prime is 13121301131093. The next prime is 13121301131149. The reversal of 13121301131101 is 10113110312131.

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 5715092671876 + 7406208459225 = 2390626^2 + 2721435^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121301131101 - 2³ = 13121301131093 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 (13121301131801) 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, 8950409316 + ... + 8950410781.

It is an arithmetic number, because the mean of its divisors is an integer number (3284800487983).

Almost surely, 2^{13121301131101} is an apocalyptic number.

It is an amenable number.

13121301131101 is a deficient number, since it is larger than the sum of its proper divisors (17900820831).

13121301131101 is an equidigital number, since it uses as much as digits as its factorization.

13121301131101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17900820830.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 13121301131101 its reverse (10113110312131), we get a palindrome (23234411443232).

The spelling of 13121301131101 in words is "thirteen trillion, one hundred twenty-one billion, three hundred one million, one hundred thirty-one thousand, one hundred one".