122211120209 has 2 divisors, whose sum is σ = 122211120210. Its totient is φ = 122211120208.

The previous prime is 122211120181. The next prime is 122211120299. The reversal of 122211120209 is 902021112221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69358489600 + 52852630609 = 263360^2 + 229897^2 .

It is a cyclic number.

It is not a de Polignac number, because 122211120209 - 2¹² = 122211116113 is a prime.

It is not a weakly prime, because it can be changed into another prime (122211120299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61105560104 + 61105560105.

It is an arithmetic number, because the mean of its divisors is an integer number (61105560105).

Almost surely, 2^122211120209 is an apocalyptic number.

It is an amenable number.

122211120209 is a deficient number, since it is larger than the sum of its proper divisors (1).

122211120209 is an equidigital number, since it uses as much as digits as its factorization.

122211120209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 122211120209 in words is "one hundred twenty-two billion, two hundred eleven million, one hundred twenty thousand, two hundred nine".