122122201110209 has 4 divisors (see below), whose sum is σ = 122122559886420. Its totient is φ = 122121842334000.

The previous prime is 122122201110191. The next prime is 122122201110269. The reversal of 122122201110209 is 902011102221221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80061424767025 + 42060776343184 = 8947705^2 + 6485428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122122201110209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122122201110269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178877042 + ... + 179558459.

It is an arithmetic number, because the mean of its divisors is an integer number (30530639971605).

Almost surely, 2^{122122201110209} is an apocalyptic number.

It is an amenable number.

122122201110209 is a deficient number, since it is larger than the sum of its proper divisors (358776211).

122122201110209 is an equidigital number, since it uses as much as digits as its factorization.

122122201110209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358776210.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 122122201110209 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, two hundred one million, one hundred ten thousand, two hundred nine".