22103440423 has 12 divisors (see below), whose sum is σ = 22818929560. Its totient is φ = 21408966720.

The previous prime is 22103440421. The next prime is 22103440439. The reversal of 22103440423 is 32404430122.

It is a happy number.

It is not a de Polignac number, because 22103440423 - 2¹ = 22103440421 is a prime.

It is a super-2 number, since 2×22103440423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22103440421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186361 + ... + 280957.

Almost surely, 2^22103440423 is an apocalyptic number.

22103440423 is a deficient number, since it is larger than the sum of its proper divisors (715489137).

22103440423 is an equidigital number, since it uses as much as digits as its factorization.

22103440423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94818 (or 94777 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 22103440423 its reverse (32404430122), we get a palindrome (54507870545).

The spelling of 22103440423 in words is "twenty-two billion, one hundred three million, four hundred forty thousand, four hundred twenty-three".