22123242005 has 4 divisors (see below), whose sum is σ = 26547890412. Its totient is φ = 17698593600.

The previous prime is 22123241999. The next prime is 22123242067. The reversal of 22123242005 is 50024232122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17085365521 + 5037876484 = 130711^2 + 70978^2 .

It is not a de Polignac number, because 22123242005 - 2⁴ = 22123241989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212324196 + ... + 2212324205.

It is an arithmetic number, because the mean of its divisors is an integer number (6636972603).

Almost surely, 2^22123242005 is an apocalyptic number.

It is an amenable number.

22123242005 is a deficient number, since it is larger than the sum of its proper divisors (4424648407).

22123242005 is an equidigital number, since it uses as much as digits as its factorization.

22123242005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424648406.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 22123242005 its reverse (50024232122), we get a palindrome (72147474127).

The spelling of 22123242005 in words is "twenty-two billion, one hundred twenty-three million, two hundred forty-two thousand, five".