12116537 has 4 divisors (see below), whose sum is σ = 12123636. Its totient is φ = 12109440.

The previous prime is 12116527. The next prime is 12116539. The reversal of 12116537 is 73561121.

12116537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10569001 + 1547536 = 3251^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 12116537 - 2⁴ = 12116521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12116539) 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, 737 + ... + 4977.

It is an arithmetic number, because the mean of its divisors is an integer number (3030909).

Almost surely, 2^12116537 is an apocalyptic number.

It is an amenable number.

12116537 is a deficient number, since it is larger than the sum of its proper divisors (7099).

12116537 is an equidigital number, since it uses as much as digits as its factorization.

12116537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098.

The product of its digits is 1260, while the sum is 26.

The square root of 12116537 is about 3480.8816411938. The cubic root of 12116537 is about 229.6815820617.

Adding to 12116537 its reverse (73561121), we get a palindrome (85677658).

The spelling of 12116537 in words is "twelve million, one hundred sixteen thousand, five hundred thirty-seven".