1112111010209 has 2 divisors, whose sum is σ = 1112111010210. Its totient is φ = 1112111010208.

The previous prime is 1112111010203. The next prime is 1112111010233. The reversal of 1112111010209 is 9020101112111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1091874525184 + 20236485025 = 1044928^2 + 142255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112111010209 - 2²⁴ = 1112094232993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112111010203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556055505104 + 556055505105.

It is an arithmetic number, because the mean of its divisors is an integer number (556055505105).

Almost surely, 2^{1112111010209} is an apocalyptic number.

It is an amenable number.

1112111010209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112111010209 is an equidigital number, since it uses as much as digits as its factorization.

1112111010209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 1112111010209 in words is "one trillion, one hundred twelve billion, one hundred eleven million, ten thousand, two hundred nine".