12249171 has 16 divisors (see below), whose sum is σ = 19797120. Its totient is φ = 7423560.

The previous prime is 12249157. The next prime is 12249199. The reversal of 12249171 is 17194221.

It is not a de Polignac number, because 12249171 - 2⁹ = 12248659 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12249121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20325 + ... + 20918.

It is an arithmetic number, because the mean of its divisors is an integer number (1237320).

Almost surely, 2^12249171 is an apocalyptic number.

12249171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12249171 is a deficient number, since it is larger than the sum of its proper divisors (7547949).

12249171 is a wasteful number, since it uses less digits than its factorization.

12249171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41263 (or 41257 counting only the distinct ones).

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

The square root of 12249171 is about 3499.8815694249. The cubic root of 12249171 is about 230.5166144153.

The spelling of 12249171 in words is "twelve million, two hundred forty-nine thousand, one hundred seventy-one".