22123120405 has 8 divisors (see below), whose sum is σ = 26982953784. Its totient is φ = 17408356800.

The previous prime is 22123120403. The next prime is 22123120417. The reversal of 22123120405 is 50402132122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59582961 + 22063537444 = 7719^2 + 148538^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22123120405 - 2¹ = 22123120403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123120403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36267106 + ... + 36267715.

It is an arithmetic number, because the mean of its divisors is an integer number (3372869223).

Almost surely, 2^22123120405 is an apocalyptic number.

It is an amenable number.

22123120405 is a deficient number, since it is larger than the sum of its proper divisors (4859833379).

22123120405 is an equidigital number, since it uses as much as digits as its factorization.

22123120405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72534887.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 22123120405 its reverse (50402132122), we get a palindrome (72525252527).

The spelling of 22123120405 in words is "twenty-two billion, one hundred twenty-three million, one hundred twenty thousand, four hundred five".