12518101 has 4 divisors (see below), whose sum is σ = 12609612. Its totient is φ = 12426592.

The previous prime is 12518087. The next prime is 12518119. The reversal of 12518101 is 10181521.

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 10692900 + 1825201 = 3270^2 + 1351^2 .

It is a cyclic number.

It is not a de Polignac number, because 12518101 - 2¹⁷ = 12387029 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 (12518801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45550 + ... + 45823.

It is an arithmetic number, because the mean of its divisors is an integer number (3152403).

Almost surely, 2^12518101 is an apocalyptic number.

It is an amenable number.

12518101 is a deficient number, since it is larger than the sum of its proper divisors (91511).

12518101 is an equidigital number, since it uses as much as digits as its factorization.

12518101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91510.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 12518101 is about 3538.0928478490. The cubic root of 12518101 is about 232.1914108505.

Adding to 12518101 its reverse (10181521), we get a palindrome (22699622).

The spelling of 12518101 in words is "twelve million, five hundred eighteen thousand, one hundred one".