120111313123 has 4 divisors (see below), whose sum is σ = 122377564368. Its totient is φ = 117845061880.

The previous prime is 120111313043. The next prime is 120111313139. The reversal of 120111313123 is 321313111021.

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 120111313123 - 2¹³ = 120111304931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120111313123.

It is not an unprimeable number, because it can be changed into a prime (120111313163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133125543 + ... + 1133125648.

It is an arithmetic number, because the mean of its divisors is an integer number (30594391092).

Almost surely, 2^120111313123 is an apocalyptic number.

120111313123 is a deficient number, since it is larger than the sum of its proper divisors (2266251245).

120111313123 is an equidigital number, since it uses as much as digits as its factorization.

120111313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266251244.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 120111313123 its reverse (321313111021), we get a palindrome (441424424144).

The spelling of 120111313123 in words is "one hundred twenty billion, one hundred eleven million, three hundred thirteen thousand, one hundred twenty-three".