12012012223 has 16 divisors (see below), whose sum is σ = 12991239360. Its totient is φ = 11076569856.

The previous prime is 12012012217. The next prime is 12012012227. The reversal of 12012012223 is 32221021021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12012012223 - 2⁵ = 12012012191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012012197 and 12012012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012012227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28011 + ... + 157507.

It is an arithmetic number, because the mean of its divisors is an integer number (811952460).

Almost surely, 2^12012012223 is an apocalyptic number.

12012012223 is a deficient number, since it is larger than the sum of its proper divisors (979227137).

12012012223 is a wasteful number, since it uses less digits than its factorization.

12012012223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129666.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12012012223 its reverse (32221021021), we get a palindrome (44233033244).

The spelling of 12012012223 in words is "twelve billion, twelve million, twelve thousand, two hundred twenty-three".