13110121 has 2 divisors, whose sum is σ = 13110122. Its totient is φ = 13110120.

The previous prime is 13110107. The next prime is 13110137. The reversal of 13110121 is 12101131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11696400 + 1413721 = 3420^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 13110121 - 2⁵ = 13110089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13110098 and 13110107.

It is not a weakly prime, because it can be changed into another prime (13110101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555060 + 6555061.

It is an arithmetic number, because the mean of its divisors is an integer number (6555061).

Almost surely, 2^13110121 is an apocalyptic number.

It is an amenable number.

13110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13110121 is an equidigital number, since it uses as much as digits as its factorization.

13110121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 13110121 is about 3620.7901071451. The cubic root of 13110121 is about 235.7955293517.

Adding to 13110121 its reverse (12101131), we get a palindrome (25211252).

It can be divided in two parts, 13110 and 121, that added together give a palindrome (13231).

The spelling of 13110121 in words is "thirteen million, one hundred ten thousand, one hundred twenty-one".