12116501 has 4 divisors (see below), whose sum is σ = 12444012. Its totient is φ = 11788992.

The previous prime is 12116483. The next prime is 12116521. The reversal of 12116501 is 10561121.

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 11662225 + 454276 = 3415^2 + 674^2 .

It is a cyclic number.

It is not a de Polignac number, because 12116501 - 2²² = 7922197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12116501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12116521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163700 + ... + 163773.

It is an arithmetic number, because the mean of its divisors is an integer number (3111003).

Almost surely, 2^12116501 is an apocalyptic number.

It is an amenable number.

12116501 is a deficient number, since it is larger than the sum of its proper divisors (327511).

12116501 is an equidigital number, since it uses as much as digits as its factorization.

12116501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327510.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 12116501 is about 3480.8764700862. The cubic root of 12116501 is about 229.6813545890.

Adding to 12116501 its reverse (10561121), we get a palindrome (22677622).

The spelling of 12116501 in words is "twelve million, one hundred sixteen thousand, five hundred one".