12013223123 has 8 divisors (see below), whose sum is σ = 13112251056. Its totient is φ = 10915348000.

The previous prime is 12013223107. The next prime is 12013223141. The reversal of 12013223123 is 32132231021.

12013223123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12013223123 - 2⁴ = 12013223107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12013223095 and 12013223104.

It is not an unprimeable number, because it can be changed into a prime (12013223623) 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 7 ways as a sum of consecutive naturals, for example, 266336 + ... + 308157.

It is an arithmetic number, because the mean of its divisors is an integer number (1639031382).

Almost surely, 2^12013223123 is an apocalyptic number.

12013223123 is a deficient number, since it is larger than the sum of its proper divisors (1099027933).

12013223123 is a wasteful number, since it uses less digits than its factorization.

12013223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576405.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12013223123 its reverse (32132231021), we get a palindrome (44145454144).

The spelling of 12013223123 in words is "twelve billion, thirteen million, two hundred twenty-three thousand, one hundred twenty-three".