12137071 has 4 divisors (see below), whose sum is σ = 12144600. Its totient is φ = 12129544.

The previous prime is 12137039. The next prime is 12137087. The reversal of 12137071 is 17073121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 17073121 = 13 ⋅1313317.

It is a cyclic number.

It is not a de Polignac number, because 12137071 - 2⁵ = 12137039 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 (12137471) 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, 256 + ... + 4933.

It is an arithmetic number, because the mean of its divisors is an integer number (3036150).

Almost surely, 2^12137071 is an apocalyptic number.

12137071 is a deficient number, since it is larger than the sum of its proper divisors (7529).

12137071 is an equidigital number, since it uses as much as digits as its factorization.

12137071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7528.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 12137071 is about 3483.8299327034. The cubic root of 12137071 is about 229.8112566233.

The spelling of 12137071 in words is "twelve million, one hundred thirty-seven thousand, seventy-one".