122411209 has 2 divisors, whose sum is σ = 122411210. Its totient is φ = 122411208.

The previous prime is 122411197. The next prime is 122411249. The reversal of 122411209 is 902114221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88736400 + 33674809 = 9420^2 + 5803^2 .

It is a cyclic number.

It is not a de Polignac number, because 122411209 - 2⁹ = 122410697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122411209.

It is not a weakly prime, because it can be changed into another prime (122411249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61205604 + 61205605.

It is an arithmetic number, because the mean of its divisors is an integer number (61205605).

Almost surely, 2^122411209 is an apocalyptic number.

It is an amenable number.

122411209 is a deficient number, since it is larger than the sum of its proper divisors (1).

122411209 is an equidigital number, since it uses as much as digits as its factorization.

122411209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 122411209 is about 11063.9599149672. The cubic root of 122411209 is about 496.5241718950.

The spelling of 122411209 in words is "one hundred twenty-two million, four hundred eleven thousand, two hundred nine".