12112030221 has 4 divisors (see below), whose sum is σ = 16149373632. Its totient is φ = 8074686812.

The previous prime is 12112030219. The next prime is 12112030247. The reversal of 12112030221 is 12203021121.

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.

It is a cyclic number.

It is not a de Polignac number, because 12112030221 - 2¹ = 12112030219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12112030221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112030201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018671701 + ... + 2018671706.

It is an arithmetic number, because the mean of its divisors is an integer number (4037343408).

Almost surely, 2^12112030221 is an apocalyptic number.

It is an amenable number.

12112030221 is a deficient number, since it is larger than the sum of its proper divisors (4037343411).

12112030221 is an equidigital number, since it uses as much as digits as its factorization.

12112030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037343410.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12112030221 its reverse (12203021121), we get a palindrome (24315051342).

The spelling of 12112030221 in words is "twelve billion, one hundred twelve million, thirty thousand, two hundred twenty-one".