12171136 has 16 divisors (see below), whose sum is σ = 24247440. Its totient is φ = 6085504.

The previous prime is 12171119. The next prime is 12171149. The reversal of 12171136 is 63117121.

12171136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47416 + ... + 47671.

It is an arithmetic number, because the mean of its divisors is an integer number (1515465).

Almost surely, 2^12171136 is an apocalyptic number.

12171136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12171136 is a deficient number, since it is larger than the sum of its proper divisors (12076304).

12171136 is an frugal number, since it uses more digits than its factorization.

12171136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95101 (or 95089 counting only the distinct ones).

The product of its digits is 252, while the sum is 22.

The square root of 12171136 is about 3488.7155229396. The cubic root of 12171136 is about 230.0260587992.

Adding to 12171136 its reverse (63117121), we get a palindrome (75288257).

The spelling of 12171136 in words is "twelve million, one hundred seventy-one thousand, one hundred thirty-six".