22002221009 has 2 divisors, whose sum is σ = 22002221010. Its totient is φ = 22002221008.

The previous prime is 22002220993. The next prime is 22002221029. The reversal of 22002221009 is 90012220022.

It is an a-pointer prime, because the next prime (22002221029) can be obtained adding 22002221009 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20984419600 + 1017801409 = 144860^2 + 31903^2 .

It is a cyclic number.

It is not a de Polignac number, because 22002221009 - 2⁴ = 22002220993 is a prime.

It is not a weakly prime, because it can be changed into another prime (22002221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001110504 + 11001110505.

It is an arithmetic number, because the mean of its divisors is an integer number (11001110505).

Almost surely, 2^22002221009 is an apocalyptic number.

It is an amenable number.

22002221009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22002221009 is an equidigital number, since it uses as much as digits as its factorization.

22002221009 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 20.

The spelling of 22002221009 in words is "twenty-two billion, two million, two hundred twenty-one thousand, nine".