22003123013 has 4 divisors (see below), whose sum is σ = 22020194220. Its totient is φ = 21986051808.

The previous prime is 22003122997. The next prime is 22003123057. The reversal of 22003123013 is 31032130022.

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 19610641444 + 2392481569 = 140038^2 + 48913^2 .

It is a cyclic number.

It is not a de Polignac number, because 22003123013 - 2⁴ = 22003122997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22003122982 and 22003123000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003123313) 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, 8533670 + ... + 8536247.

It is an arithmetic number, because the mean of its divisors is an integer number (5505048555).

Almost surely, 2^22003123013 is an apocalyptic number.

It is an amenable number.

22003123013 is a deficient number, since it is larger than the sum of its proper divisors (17071207).

22003123013 is a wasteful number, since it uses less digits than its factorization.

22003123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17071206.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 22003123013 its reverse (31032130022), we get a palindrome (53035253035).

It can be divided in two parts, 2200 and 3123013, that added together give a palindrome (3125213).

The spelling of 22003123013 in words is "twenty-two billion, three million, one hundred twenty-three thousand, thirteen".