22221110121223 has 16 divisors (see below), whose sum is σ = 23990350648320. Its totient is φ = 20460453028704.

The previous prime is 22221110121211. The next prime is 22221110121271. The reversal of 22221110121223 is 32212101112222.

It is a de Polignac number, because none of the positive numbers 2^k-22221110121223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22221110121194 and 22221110121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221110122223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23017990 + ... + 23963932.

It is an arithmetic number, because the mean of its divisors is an integer number (1499396915520).

Almost surely, 2^{22221110121223} is an apocalyptic number.

22221110121223 is a deficient number, since it is larger than the sum of its proper divisors (1769240527097).

22221110121223 is a wasteful number, since it uses less digits than its factorization.

22221110121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950478.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 22221110121223 its reverse (32212101112222), we get a palindrome (54433211233445).

Subtracting 22221110121223 from its reverse (32212101112222), we obtain a palindrome (9990990990999).

The spelling of 22221110121223 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty-three".