22004462009 has 2 divisors, whose sum is σ = 22004462010. Its totient is φ = 22004462008.

The previous prime is 22004461987. The next prime is 22004462033. The reversal of 22004462009 is 90026440022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15944617984 + 6059844025 = 126272^2 + 77845^2 .

It is a cyclic number.

It is not a de Polignac number, because 22004462009 - 2²⁰ = 22003413433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22004462099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002231004 + 11002231005.

It is an arithmetic number, because the mean of its divisors is an integer number (11002231005).

Almost surely, 2^22004462009 is an apocalyptic number.

It is an amenable number.

22004462009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004462009 is an equidigital number, since it uses as much as digits as its factorization.

22004462009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 22004462009 in words is "twenty-two billion, four million, four hundred sixty-two thousand, nine".