12012123223 has 12 divisors (see below), whose sum is σ = 12416796552. Its totient is φ = 11612147040.

The previous prime is 12012123199. The next prime is 12012123239. The reversal of 12012123223 is 32232121021.

It is not a de Polignac number, because 12012123223 - 2⁵ = 12012123191 is a prime.

It is a super-2 number, since 2×12012123223² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12012123223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012123293) 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, 905428 + ... + 918598.

It is an arithmetic number, because the mean of its divisors is an integer number (1034733046).

Almost surely, 2^12012123223 is an apocalyptic number.

12012123223 is a deficient number, since it is larger than the sum of its proper divisors (404673329).

12012123223 is an equidigital number, since it uses as much as digits as its factorization.

12012123223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13522 (or 13365 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12012123223 its reverse (32232121021), we get a palindrome (44244244244).

The spelling of 12012123223 in words is "twelve billion, twelve million, one hundred twenty-three thousand, two hundred twenty-three".