12112013 has 2 divisors, whose sum is σ = 12112014. Its totient is φ = 12112012.

The previous prime is 12111997. The next prime is 12112019. The reversal of 12112013 is 31021121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10640644 + 1471369 = 3262^2 + 1213^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112013 - 2⁴ = 12111997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12111985 and 12112003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112019) 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 as a sum of consecutive naturals, namely, 6056006 + 6056007.

It is an arithmetic number, because the mean of its divisors is an integer number (6056007).

Almost surely, 2^12112013 is an apocalyptic number.

It is an amenable number.

12112013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112013 is an equidigital number, since it uses as much as digits as its factorization.

12112013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 12112013 is about 3480.2317451572. The cubic root of 12112013 is about 229.6529927922.

Adding to 12112013 its reverse (31021121), we get a palindrome (43133134).

The spelling of 12112013 in words is "twelve million, one hundred twelve thousand, thirteen".