123120011023 has 8 divisors (see below), whose sum is σ = 123515786160. Its totient is φ = 122724416640.

The previous prime is 123120011017. The next prime is 123120011099. The reversal of 123120011023 is 320110021321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123120011023 is a prime.

It is a super-2 number, since 2×123120011023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123120010988 and 123120011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123120014023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392393 + ... + 1478173.

It is an arithmetic number, because the mean of its divisors is an integer number (15439473270).

Almost surely, 2^123120011023 is an apocalyptic number.

123120011023 is a deficient number, since it is larger than the sum of its proper divisors (395775137).

123120011023 is an equidigital number, since it uses as much as digits as its factorization.

123120011023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90377.

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

Adding to 123120011023 its reverse (320110021321), we get a palindrome (443230032344).

The spelling of 123120011023 in words is "one hundred twenty-three billion, one hundred twenty million, eleven thousand, twenty-three".