12149271 has 36 divisors (see below), whose sum is σ = 19444152. Its totient is φ = 7579008.

The previous prime is 12149257. The next prime is 12149273. The reversal of 12149271 is 17294121.

12149271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12149271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149273) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70141 + ... + 70313.

Almost surely, 2^12149271 is an apocalyptic number.

12149271 is a deficient number, since it is larger than the sum of its proper divisors (7294881).

12149271 is an equidigital number, since it uses as much as digits as its factorization.

12149271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 193 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 12149271 is about 3485.5804394677. The cubic root of 12149271 is about 229.8882317695. Note that the first 3 decimals are identical.

The spelling of 12149271 in words is "twelve million, one hundred forty-nine thousand, two hundred seventy-one".