22240042809 has 32 divisors (see below), whose sum is σ = 31348961280. Its totient is φ = 13996211328.

The previous prime is 22240042807. The next prime is 22240042813. The reversal of 22240042809 is 90824004222.

It is a happy number.

It is not a de Polignac number, because 22240042809 - 2¹ = 22240042807 is a prime.

It is a super-2 number, since 2×22240042809² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22240042809.

It is not an unprimeable number, because it can be changed into a prime (22240042807) 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 in 31 ways as a sum of consecutive naturals, for example, 8148157 + ... + 8150885.

It is an arithmetic number, because the mean of its divisors is an integer number (979655040).

Almost surely, 2^22240042809 is an apocalyptic number.

It is an amenable number.

22240042809 is a deficient number, since it is larger than the sum of its proper divisors (9108918471).

22240042809 is a wasteful number, since it uses less digits than its factorization.

22240042809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261.

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 22240042809 in words is "twenty-two billion, two hundred forty million, forty-two thousand, eight hundred nine".