111111100202209 has 2 divisors, whose sum is σ = 111111100202210. Its totient is φ = 111111100202208.

The previous prime is 111111100202177. The next prime is 111111100202213. The reversal of 111111100202209 is 902202001111111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102963232526400 + 8147867675809 = 10147080^2 + 2854447^2 .

It is an emirp because it is prime and its reverse (902202001111111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111111100202209 - 2⁵ = 111111100202177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111111100202209.

It is not a weakly prime, because it can be changed into another prime (111111104202209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555550101104 + 55555550101105.

It is an arithmetic number, because the mean of its divisors is an integer number (55555550101105).

Almost surely, 2^{111111100202209} is an apocalyptic number.

It is an amenable number.

111111100202209 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111100202209 is an equidigital number, since it uses as much as digits as its factorization.

111111100202209 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 111111100202209 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, two hundred two thousand, two hundred nine".