1113121103209 has 2 divisors, whose sum is σ = 1113121103210. Its totient is φ = 1113121103208.

The previous prime is 1113121103183. The next prime is 1113121103233. The reversal of 1113121103209 is 9023011213111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1044592334809 + 68528768400 = 1022053^2 + 261780^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113121103209 - 2⁵ = 1113121103177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113121103239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556560551604 + 556560551605.

It is an arithmetic number, because the mean of its divisors is an integer number (556560551605).

Almost surely, 2^{1113121103209} is an apocalyptic number.

It is an amenable number.

1113121103209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113121103209 is an equidigital number, since it uses as much as digits as its factorization.

1113121103209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 1113121103209 in words is "one trillion, one hundred thirteen billion, one hundred twenty-one million, one hundred three thousand, two hundred nine".