12111417 has 16 divisors (see below), whose sum is σ = 18888000. Its totient is φ = 7648992.

The previous prime is 12111397. The next prime is 12111419. The reversal of 12111417 is 71411121.

It is not a de Polignac number, because 12111417 - 2⁸ = 12111161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12111417.

It is not an unprimeable number, because it can be changed into a prime (12111419) 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, 11292 + ... + 12317.

It is an arithmetic number, because the mean of its divisors is an integer number (1180500).

Almost surely, 2^12111417 is an apocalyptic number.

It is an amenable number.

12111417 is a deficient number, since it is larger than the sum of its proper divisors (6776583).

12111417 is a wasteful number, since it uses less digits than its factorization.

12111417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23637 (or 23631 counting only the distinct ones).

The product of its digits is 56, while the sum is 18.

The square root of 12111417 is about 3480.1461176221. The cubic root of 12111417 is about 229.6492258591.

Adding to 12111417 its reverse (71411121), we get a palindrome (83522538).

It can be divided in two parts, 1211 and 1417, that added together give a triangular number (2628 = T₇₂).

The spelling of 12111417 in words is "twelve million, one hundred eleven thousand, four hundred seventeen".