2110111112209 has 2 divisors, whose sum is σ = 2110111112210. Its totient is φ = 2110111112208.

The previous prime is 2110111112203. The next prime is 2110111112227. The reversal of 2110111112209 is 9022111110112.

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., 1656201694225 + 453909417984 = 1286935^2 + 673728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110111112209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2110111112209.

It is not a weakly prime, because it can be changed into another prime (2110111112203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055055556104 + 1055055556105.

It is an arithmetic number, because the mean of its divisors is an integer number (1055055556105).

Almost surely, 2^{2110111112209} is an apocalyptic number.

It is an amenable number.

2110111112209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110111112209 is an equidigital number, since it uses as much as digits as its factorization.

2110111112209 is an evil number, because the sum of its binary digits is even.

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

The spelling of 2110111112209 in words is "two trillion, one hundred ten billion, one hundred eleven million, one hundred twelve thousand, two hundred nine".