22003012309 has 4 divisors (see below), whose sum is σ = 22037020704. Its totient is φ = 21969003916.

The previous prime is 22003012289. The next prime is 22003012351. The reversal of 22003012309 is 90321030022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22003012309 - 2³¹ = 19855528661 is a prime.

It is a super-2 number, since 2×22003012309² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22003012309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003018309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17003227 + ... + 17004520.

It is an arithmetic number, because the mean of its divisors is an integer number (5509255176).

Almost surely, 2^22003012309 is an apocalyptic number.

It is an amenable number.

22003012309 is a deficient number, since it is larger than the sum of its proper divisors (34008395).

22003012309 is an equidigital number, since it uses as much as digits as its factorization.

22003012309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34008394.

The product of its (nonzero) digits is 648, while the sum is 22.

The spelling of 22003012309 in words is "twenty-two billion, three million, twelve thousand, three hundred nine".