12112201 has 4 divisors (see below), whose sum is σ = 12265600. Its totient is φ = 11958804.

The previous prime is 12112187. The next prime is 12112231. The reversal of 12112201 is 10221121.

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: 10221121 = 383 ⋅26687.

It is a cyclic number.

It is not a de Polignac number, because 12112201 - 2¹⁵ = 12079433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112231) 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 3 ways as a sum of consecutive naturals, for example, 76581 + ... + 76738.

It is an arithmetic number, because the mean of its divisors is an integer number (3066400).

Almost surely, 2^12112201 is an apocalyptic number.

It is an amenable number.

12112201 is a deficient number, since it is larger than the sum of its proper divisors (153399).

12112201 is an equidigital number, since it uses as much as digits as its factorization.

12112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153398.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 12112201 is about 3480.2587547480. The cubic root of 12112201 is about 229.6541809938.

Adding to 12112201 its reverse (10221121), we get a palindrome (22333322).

The spelling of 12112201 in words is "twelve million, one hundred twelve thousand, two hundred one".