22022085818 has 4 divisors (see below), whose sum is σ = 33033128730. Its totient is φ = 11011042908.

The previous prime is 22022085817. The next prime is 22022085829. The reversal of 22022085818 is 81858022022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15535877449 + 6486208369 = 124643^2 + 80537^2 .

It is not an unprimeable number, because it can be changed into a prime (22022085817) 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 as a sum of consecutive naturals, namely, 5505521453 + ... + 5505521456.

Almost surely, 2^22022085818 is an apocalyptic number.

22022085818 is a deficient number, since it is larger than the sum of its proper divisors (11011042912).

22022085818 is a wasteful number, since it uses less digits than its factorization.

22022085818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011042911.

The product of its (nonzero) digits is 40960, while the sum is 38.

The spelling of 22022085818 in words is "twenty-two billion, twenty-two million, eighty-five thousand, eight hundred eighteen".