12122223223 has 12 divisors (see below), whose sum is σ = 13347838504. Its totient is φ = 11000840400.

The previous prime is 12122223203. The next prime is 12122223233. The reversal of 12122223223 is 32232222121.

It is a de Polignac number, because none of the positive numbers 2^k-12122223223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122223194 and 12122223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122223203) 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, 18636 + ... + 156817.

Almost surely, 2^12122223223 is an apocalyptic number.

12122223223 is a deficient number, since it is larger than the sum of its proper divisors (1225615281).

12122223223 is a wasteful number, since it uses less digits than its factorization.

12122223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176046 (or 176035 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

Adding to 12122223223 its reverse (32232222121), we get a palindrome (44354445344).

The spelling of 12122223223 in words is "twelve billion, one hundred twenty-two million, two hundred twenty-three thousand, two hundred twenty-three".