12171153 has 16 divisors (see below), whose sum is σ = 17342720. Its totient is φ = 7569936.

The previous prime is 12171151. The next prime is 12171161. The reversal of 12171153 is 35117121.

It is a happy number.

It is not a de Polignac number, because 12171153 - 2¹ = 12171151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12171151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2226 + ... + 5412.

It is an arithmetic number, because the mean of its divisors is an integer number (1083920).

Almost surely, 2^12171153 is an apocalyptic number.

It is an amenable number.

12171153 is a deficient number, since it is larger than the sum of its proper divisors (5171567).

12171153 is a wasteful number, since it uses less digits than its factorization.

12171153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276.

The product of its digits is 210, while the sum is 21.

The square root of 12171153 is about 3488.7179593656. The cubic root of 12171153 is about 230.0261658952.

Adding to 12171153 its reverse (35117121), we get a palindrome (47288274).

The spelling of 12171153 in words is "twelve million, one hundred seventy-one thousand, one hundred fifty-three".