22123244243 has 4 divisors (see below), whose sum is σ = 22662835608. Its totient is φ = 21583652880.

The previous prime is 22123244207. The next prime is 22123244257. The reversal of 22123244243 is 34244232122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34244232122 = 2 ⋅17122116061.

It is a cyclic number.

It is not a de Polignac number, because 22123244243 - 2¹² = 22123240147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22123144243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269795621 + ... + 269795702.

It is an arithmetic number, because the mean of its divisors is an integer number (5665708902).

Almost surely, 2^22123244243 is an apocalyptic number.

22123244243 is a deficient number, since it is larger than the sum of its proper divisors (539591365).

22123244243 is an equidigital number, since it uses as much as digits as its factorization.

22123244243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539591364.

The product of its digits is 18432, while the sum is 29.

Adding to 22123244243 its reverse (34244232122), we get a palindrome (56367476365).

The spelling of 22123244243 in words is "twenty-two billion, one hundred twenty-three million, two hundred forty-four thousand, two hundred forty-three".