12013220123 has 2 divisors, whose sum is σ = 12013220124. Its totient is φ = 12013220122.

The previous prime is 12013220077. The next prime is 12013220147. The reversal of 12013220123 is 32102231021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12013220123 - 2⁶ = 12013220059 is a prime.

It is not a weakly prime, because it can be changed into another prime (12013220423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006610061 + 6006610062.

It is an arithmetic number, because the mean of its divisors is an integer number (6006610062).

Almost surely, 2^12013220123 is an apocalyptic number.

12013220123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013220123 is an equidigital number, since it uses as much as digits as its factorization.

12013220123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12013220123 its reverse (32102231021), we get a palindrome (44115451144).

The spelling of 12013220123 in words is "twelve billion, thirteen million, two hundred twenty thousand, one hundred twenty-three".