123220232123 has 2 divisors, whose sum is σ = 123220232124. Its totient is φ = 123220232122.

The previous prime is 123220232111. The next prime is 123220232137. The reversal of 123220232123 is 321232022321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123220232123 - 2³⁰ = 122146490299 is a prime.

It is not a weakly prime, because it can be changed into another prime (123220232143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610116061 + 61610116062.

It is an arithmetic number, because the mean of its divisors is an integer number (61610116062).

Almost surely, 2^123220232123 is an apocalyptic number.

123220232123 is a deficient number, since it is larger than the sum of its proper divisors (1).

123220232123 is an equidigital number, since it uses as much as digits as its factorization.

123220232123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 123220232123 its reverse (321232022321), we get a palindrome (444452254444).

The spelling of 123220232123 in words is "one hundred twenty-three billion, two hundred twenty million, two hundred thirty-two thousand, one hundred twenty-three".