210112111012009 has 2 divisors, whose sum is σ = 210112111012010. Its totient is φ = 210112111012008.

The previous prime is 210112111011991. The next prime is 210112111012033. The reversal of 210112111012009 is 900210111211012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136030887379984 + 74081223632025 = 11663228^2 + 8607045^2 .

It is a cyclic number.

It is not a de Polignac number, because 210112111012009 - 2³⁹ = 209562355198121 is a prime.

It is not a weakly prime, because it can be changed into another prime (210112111012039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105056055506004 + 105056055506005.

It is an arithmetic number, because the mean of its divisors is an integer number (105056055506005).

Almost surely, 2^{210112111012009} is an apocalyptic number.

It is an amenable number.

210112111012009 is a deficient number, since it is larger than the sum of its proper divisors (1).

210112111012009 is an equidigital number, since it uses as much as digits as its factorization.

210112111012009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 210112111012009 in words is "two hundred ten trillion, one hundred twelve billion, one hundred eleven million, twelve thousand, nine".