12112405 has 16 divisors (see below), whose sum is σ = 15566400. Its totient is φ = 9020160.

The previous prime is 12112403. The next prime is 12112409. The reversal of 12112405 is 50421121.

It is not a de Polignac number, because 12112405 - 2¹ = 12112403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4525 + ... + 6685.

It is an arithmetic number, because the mean of its divisors is an integer number (972900).

Almost surely, 2^12112405 is an apocalyptic number.

It is an amenable number.

12112405 is a deficient number, since it is larger than the sum of its proper divisors (3453995).

12112405 is a wasteful number, since it uses less digits than its factorization.

12112405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 12112405 is about 3480.2880627902. The cubic root of 12112405 is about 229.6554703050.

Adding to 12112405 its reverse (50421121), we get a palindrome (62533526).

The spelling of 12112405 in words is "twelve million, one hundred twelve thousand, four hundred five".