22135315505 has 4 divisors (see below), whose sum is σ = 26562378612. Its totient is φ = 17708252400.

The previous prime is 22135315471. The next prime is 22135315507. The reversal of 22135315505 is 50551353122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50551353122 = 2 ⋅25275676561.

It can be written as a sum of positive squares in 2 ways, for example, as 13353189136 + 8782126369 = 115556^2 + 93713^2 .

It is not a de Polignac number, because 22135315505 - 2¹² = 22135311409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22135315507) 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 3 ways as a sum of consecutive naturals, for example, 2213531546 + ... + 2213531555.

It is an arithmetic number, because the mean of its divisors is an integer number (6640594653).

Almost surely, 2^22135315505 is an apocalyptic number.

It is an amenable number.

22135315505 is a deficient number, since it is larger than the sum of its proper divisors (4427063107).

22135315505 is an equidigital number, since it uses as much as digits as its factorization.

22135315505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427063106.

The product of its (nonzero) digits is 22500, while the sum is 32.

Adding to 22135315505 its reverse (50551353122), we get a palindrome (72686668627).

The spelling of 22135315505 in words is "twenty-two billion, one hundred thirty-five million, three hundred fifteen thousand, five hundred five".