102111122209 has 2 divisors, whose sum is σ = 102111122210. Its totient is φ = 102111122208.

The previous prime is 102111122159. The next prime is 102111122231. The reversal of 102111122209 is 902221111201.

It is an a-pointer prime, because the next prime (102111122231) can be obtained adding 102111122209 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79059380625 + 23051741584 = 281175^2 + 151828^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111122209 - 2¹⁷ = 102110991137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102111122209.

It is not a weakly prime, because it can be changed into another prime (102111122909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055561104 + 51055561105.

It is an arithmetic number, because the mean of its divisors is an integer number (51055561105).

Almost surely, 2^102111122209 is an apocalyptic number.

It is an amenable number.

102111122209 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111122209 is an equidigital number, since it uses as much as digits as its factorization.

102111122209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 102111122209 in words is "one hundred two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred nine".