12112557 has 8 divisors (see below), whose sum is σ = 17000160. Its totient is φ = 7650000.

The previous prime is 12112549. The next prime is 12112561. The reversal of 12112557 is 75521121.

12112557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12112557 - 2³ = 12112549 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112057) 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 7 ways as a sum of consecutive naturals, for example, 106194 + ... + 106307.

It is an arithmetic number, because the mean of its divisors is an integer number (2125020).

Almost surely, 2^12112557 is an apocalyptic number.

It is an amenable number.

12112557 is a deficient number, since it is larger than the sum of its proper divisors (4887603).

12112557 is a wasteful number, since it uses less digits than its factorization.

12112557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212523.

The product of its digits is 700, while the sum is 24.

The square root of 12112557 is about 3480.3098999945. The cubic root of 12112557 is about 229.6564309589.

Adding to 12112557 its reverse (75521121), we get a palindrome (87633678).

The spelling of 12112557 in words is "twelve million, one hundred twelve thousand, five hundred fifty-seven".