12318101 has 4 divisors (see below), whose sum is σ = 12550572. Its totient is φ = 12085632.

The previous prime is 12318091. The next prime is 12318107. The reversal of 12318101 is 10181321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10181321 = 19 ⋅535859.

It can be written as a sum of positive squares in 2 ways, for example, as 6682225 + 5635876 = 2585^2 + 2374^2 .

It is a cyclic number.

It is not a de Polignac number, because 12318101 - 2¹⁰ = 12317077 is a prime.

It is a super-2 number, since 2×12318101² = 303471224492402, which 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 12318101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12318107) 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, 116156 + ... + 116261.

It is an arithmetic number, because the mean of its divisors is an integer number (3137643).

Almost surely, 2^12318101 is an apocalyptic number.

It is an amenable number.

12318101 is a deficient number, since it is larger than the sum of its proper divisors (232471).

12318101 is an equidigital number, since it uses as much as digits as its factorization.

12318101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232470.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 12318101 is about 3509.7152306134. The cubic root of 12318101 is about 230.9482027501.

Adding to 12318101 its reverse (10181321), we get a palindrome (22499422).

The spelling of 12318101 in words is "twelve million, three hundred eighteen thousand, one hundred one".