12119813 has 2 divisors, whose sum is σ = 12119814. Its totient is φ = 12119812.

The previous prime is 12119797. The next prime is 12119837. The reversal of 12119813 is 31891121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10903204 + 1216609 = 3302^2 + 1103^2 .

It is a cyclic number.

It is not a de Polignac number, because 12119813 - 2⁴ = 12119797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12119893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6059906 + 6059907.

It is an arithmetic number, because the mean of its divisors is an integer number (6059907).

Almost surely, 2^12119813 is an apocalyptic number.

It is an amenable number.

12119813 is a deficient number, since it is larger than the sum of its proper divisors (1).

12119813 is an equidigital number, since it uses as much as digits as its factorization.

12119813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 26.

The square root of 12119813 is about 3481.3521798290. The cubic root of 12119813 is about 229.7022801941.

The spelling of 12119813 in words is "twelve million, one hundred nineteen thousand, eight hundred thirteen".