12112103221 has 2 divisors, whose sum is σ = 12112103222. Its totient is φ = 12112103220.

The previous prime is 12112103207. The next prime is 12112103233. The reversal of 12112103221 is 12230121121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12112103025 + 196 = 110055^2 + 14^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112103221 - 2⁵ = 12112103189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12112103195 and 12112103204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12113103221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056051610 + 6056051611.

It is an arithmetic number, because the mean of its divisors is an integer number (6056051611).

Almost surely, 2^12112103221 is an apocalyptic number.

It is an amenable number.

12112103221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112103221 is an equidigital number, since it uses as much as digits as its factorization.

12112103221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12112103221 its reverse (12230121121), we get a palindrome (24342224342).

The spelling of 12112103221 in words is "twelve billion, one hundred twelve million, one hundred three thousand, two hundred twenty-one".