122021022209 has 2 divisors, whose sum is σ = 122021022210. Its totient is φ = 122021022208.

The previous prime is 122021022203. The next prime is 122021022301. The reversal of 122021022209 is 902220120221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98203890625 + 23817131584 = 313375^2 + 154328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122021022209 is a prime.

It is not a weakly prime, because it can be changed into another prime (122021022203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010511104 + 61010511105.

It is an arithmetic number, because the mean of its divisors is an integer number (61010511105).

Almost surely, 2^122021022209 is an apocalyptic number.

It is an amenable number.

122021022209 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021022209 is an equidigital number, since it uses as much as digits as its factorization.

122021022209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 122021022209 in words is "one hundred twenty-two billion, twenty-one million, twenty-two thousand, two hundred nine".