123220123 has 8 divisors (see below), whose sum is σ = 132798848. Its totient is φ = 113655744.

The previous prime is 123220117. The next prime is 123220127. The reversal of 123220123 is 321022321.

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 123220123 - 2⁹ = 123219611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123220097 and 123220106.

It is not an unprimeable number, because it can be changed into a prime (123220127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20086 + ... + 25492.

It is an arithmetic number, because the mean of its divisors is an integer number (16599856).

Almost surely, 2^123220123 is an apocalyptic number.

123220123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123220123 is a deficient number, since it is larger than the sum of its proper divisors (9578725).

123220123 is a wasteful number, since it uses less digits than its factorization.

123220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7173.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123220123 is about 11100.4559816253. The cubic root of 123220123 is about 497.6154768430.

Adding to 123220123 its reverse (321022321), we get a palindrome (444242444).

The spelling of 123220123 in words is "one hundred twenty-three million, two hundred twenty thousand, one hundred twenty-three".