12171113 has 8 divisors (see below), whose sum is σ = 12567360. Its totient is φ = 11778480.

The previous prime is 12171101. The next prime is 12171119. The reversal of 12171113 is 31117121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12171113 - 2¹² = 12167017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12171091 and 12171100.

It is not an unprimeable number, because it can be changed into a prime (12171119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7028 + ... + 8586.

It is an arithmetic number, because the mean of its divisors is an integer number (1570920).

Almost surely, 2^12171113 is an apocalyptic number.

It is an amenable number.

12171113 is a deficient number, since it is larger than the sum of its proper divisors (396247).

12171113 is a wasteful number, since it uses less digits than its factorization.

12171113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807.

The product of its digits is 42, while the sum is 17.

The square root of 12171113 is about 3488.7122265959. The cubic root of 12171113 is about 230.0259139044.

Adding to 12171113 its reverse (31117121), we get a palindrome (43288234).

The spelling of 12171113 in words is "twelve million, one hundred seventy-one thousand, one hundred thirteen".