12220220123 has 4 divisors (see below), whose sum is σ = 12450790368. Its totient is φ = 11989649880.

The previous prime is 12220220093. The next prime is 12220220161. The reversal of 12220220123 is 32102202221.

12220220123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12220220123 - 2¹⁸ = 12219957979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220220323) 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 3 ways as a sum of consecutive naturals, for example, 115285043 + ... + 115285148.

It is an arithmetic number, because the mean of its divisors is an integer number (3112697592).

Almost surely, 2^12220220123 is an apocalyptic number.

12220220123 is a deficient number, since it is larger than the sum of its proper divisors (230570245).

12220220123 is an equidigital number, since it uses as much as digits as its factorization.

12220220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230570244.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12220220123 its reverse (32102202221), we get a palindrome (44322422344).

The spelling of 12220220123 in words is "twelve billion, two hundred twenty million, two hundred twenty thousand, one hundred twenty-three".