122001220009 has 6 divisors (see below), whose sum is σ = 126353226350. Its totient is φ = 117794280576.

The previous prime is 122001219961. The next prime is 122001220049. The reversal of 122001220009 is 900022100221.

It can be written as a sum of positive squares in 3 ways, for example, as 112954384 + 121888265625 = 10628^2 + 349125^2 .

It is not a de Polignac number, because 122001220009 - 2³³ = 113411285417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122001220049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72532584 + ... + 72534265.

Almost surely, 2^122001220009 is an apocalyptic number.

It is an amenable number.

122001220009 is a deficient number, since it is larger than the sum of its proper divisors (4352006341).

122001220009 is an equidigital number, since it uses as much as digits as its factorization.

122001220009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145066907 (or 145066878 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 122001220009 in words is "one hundred twenty-two billion, one million, two hundred twenty thousand, nine".