22221003123 has 48 divisors (see below), whose sum is σ = 36248415840. Its totient is φ = 12993523200.

The previous prime is 22221003109. The next prime is 22221003149. The reversal of 22221003123 is 32130012222.

It is not a de Polignac number, because 22221003123 - 2²⁴ = 22204225907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22221003096 and 22221003105.

It is not an unprimeable number, because it can be changed into a prime (22221003193) 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 47 ways as a sum of consecutive naturals, for example, 7523415 + ... + 7526367.

It is an arithmetic number, because the mean of its divisors is an integer number (755175330).

Almost surely, 2^22221003123 is an apocalyptic number.

22221003123 is a deficient number, since it is larger than the sum of its proper divisors (14027412717).

22221003123 is a wasteful number, since it uses less digits than its factorization.

22221003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620 (or 5617 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22221003123 its reverse (32130012222), we get a palindrome (54351015345).

Subtracting 22221003123 from its reverse (32130012222), we obtain a palindrome (9909009099).

The spelling of 22221003123 in words is "twenty-two billion, two hundred twenty-one million, three thousand, one hundred twenty-three".