123120020113 has 4 divisors (see below), whose sum is σ = 123166117888. Its totient is φ = 123073922340.

The previous prime is 123120020063. The next prime is 123120020189. The reversal of 123120020113 is 311020021321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311020021321 = 467 ⋅665995763.

It is a cyclic number.

It is not a de Polignac number, because 123120020113 - 2¹³ = 123120011921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123120420113) 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, 23044881 + ... + 23050222.

It is an arithmetic number, because the mean of its divisors is an integer number (30791529472).

Almost surely, 2^123120020113 is an apocalyptic number.

It is an amenable number.

123120020113 is a deficient number, since it is larger than the sum of its proper divisors (46097775).

123120020113 is an equidigital number, since it uses as much as digits as its factorization.

123120020113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46097774.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123120020113 its reverse (311020021321), we get a palindrome (434140041434).

The spelling of 123120020113 in words is "one hundred twenty-three billion, one hundred twenty million, twenty thousand, one hundred thirteen".