12112819 has 2 divisors, whose sum is σ = 12112820. Its totient is φ = 12112818.

The previous prime is 12112781. The next prime is 12112883. The reversal of 12112819 is 91821121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12112819 - 2²³ = 3724211 is a prime.

It is a super-2 number, since 2×12112819² = 293440768253522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12112793 and 12112802.

It is not a weakly prime, because it can be changed into another prime (12112889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056409 + 6056410.

It is an arithmetic number, because the mean of its divisors is an integer number (6056410).

Almost surely, 2^12112819 is an apocalyptic number.

12112819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112819 is an equidigital number, since it uses as much as digits as its factorization.

12112819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 25.

The square root of 12112819 is about 3480.3475401172. The cubic root of 12112819 is about 229.6580868039.

The spelling of 12112819 in words is "twelve million, one hundred twelve thousand, eight hundred nineteen".