13010013031121 has 4 divisors (see below), whose sum is σ = 13010558388132. Its totient is φ = 13009467674112.

The previous prime is 13010013031117. The next prime is 13010013031181. The reversal of 13010013031121 is 12113031001031.

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 745735873600 + 12264277157521 = 863560^2 + 3502039^2 .

It is a cyclic number.

It is not a de Polignac number, because 13010013031121 - 2² = 13010013031117 is a prime.

It is a super-2 number, since 2×13010013031121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13010013031121.

It is not an unprimeable number, because it can be changed into a prime (13010013031181) 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, 272642720 + ... + 272690433.

It is an arithmetic number, because the mean of its divisors is an integer number (3252639597033).

Almost surely, 2^{13010013031121} is an apocalyptic number.

It is an amenable number.

13010013031121 is a deficient number, since it is larger than the sum of its proper divisors (545357011).

13010013031121 is an equidigital number, since it uses as much as digits as its factorization.

13010013031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545357010.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 13010013031121 its reverse (12113031001031), we get a palindrome (25123044032152).

The spelling of 13010013031121 in words is "thirteen trillion, ten billion, thirteen million, thirty-one thousand, one hundred twenty-one".