12175121 has 4 divisors (see below), whose sum is σ = 13914432. Its totient is φ = 10435812.

The previous prime is 12175117. The next prime is 12175123. The reversal of 12175121 is 12157121.

It is a happy number.

12175121 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12157121 = 769 ⋅15809.

It is a cyclic number.

It is not a de Polignac number, because 12175121 - 2² = 12175117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12175093 and 12175102.

It is not an unprimeable number, because it can be changed into a prime (12175123) 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, 869645 + ... + 869658.

It is an arithmetic number, because the mean of its divisors is an integer number (3478608).

Almost surely, 2^12175121 is an apocalyptic number.

It is an amenable number.

12175121 is a deficient number, since it is larger than the sum of its proper divisors (1739311).

12175121 is an equidigital number, since it uses as much as digits as its factorization.

12175121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739310.

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

The square root of 12175121 is about 3489.2866033045. The cubic root of 12175121 is about 230.0511606418.

The spelling of 12175121 in words is "twelve million, one hundred seventy-five thousand, one hundred twenty-one".