12127151 has 4 divisors (see below), whose sum is σ = 12204552. Its totient is φ = 12049752.

The previous prime is 12127139. The next prime is 12127177. The reversal of 12127151 is 15172121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15172121 = 277 ⋅54773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12127151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127351) 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, 38465 + ... + 38778.

It is an arithmetic number, because the mean of its divisors is an integer number (3051138).

Almost surely, 2^12127151 is an apocalyptic number.

12127151 is a deficient number, since it is larger than the sum of its proper divisors (77401).

12127151 is an equidigital number, since it uses as much as digits as its factorization.

12127151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77400.

The product of its digits is 140, while the sum is 20.

The square root of 12127151 is about 3482.4059211987. The cubic root of 12127151 is about 229.7486289640.

Adding to 12127151 its reverse (15172121), we get a palindrome (27299272).

It can be divided in two parts, 121 and 27151, that added together give a palindrome (27272).

The spelling of 12127151 in words is "twelve million, one hundred twenty-seven thousand, one hundred fifty-one".