22044021309 has 6 divisors (see below), whose sum is σ = 31841364126. Its totient is φ = 14696014200.

The previous prime is 22044021301. The next prime is 22044021341. The reversal of 22044021309 is 90312044022.

22044021309 is a `hidden beast` number, since 2 + 2 + 0 + 440 + 213 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17698311225 + 4345710084 = 133035^2 + 65922^2 .

It is not a de Polignac number, because 22044021309 - 2³ = 22044021301 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22044021301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224667842 + ... + 1224667859.

It is an arithmetic number, because the mean of its divisors is an integer number (5306894021).

Almost surely, 2^22044021309 is an apocalyptic number.

It is an amenable number.

22044021309 is a deficient number, since it is larger than the sum of its proper divisors (9797342817).

22044021309 is a wasteful number, since it uses less digits than its factorization.

22044021309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449335707 (or 2449335704 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 22044021309 in words is "twenty-two billion, forty-four million, twenty-one thousand, three hundred nine".