22163120555 has 4 divisors (see below), whose sum is σ = 26595744672. Its totient is φ = 17730496440.

The previous prime is 22163120533. The next prime is 22163120557. The reversal of 22163120555 is 55502136122.

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

It is not a de Polignac number, because 22163120555 - 2¹⁸ = 22162858411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22163120557) 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, 2216312051 + ... + 2216312060.

It is an arithmetic number, because the mean of its divisors is an integer number (6648936168).

Almost surely, 2^22163120555 is an apocalyptic number.

22163120555 is a deficient number, since it is larger than the sum of its proper divisors (4432624117).

22163120555 is an equidigital number, since it uses as much as digits as its factorization.

22163120555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432624116.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 22163120555 its reverse (55502136122), we get a palindrome (77665256677).

The spelling of 22163120555 in words is "twenty-two billion, one hundred sixty-three million, one hundred twenty thousand, five hundred fifty-five".