123011033123 has 16 divisors (see below), whose sum is σ = 136417280640. Its totient is φ = 109980763200.

The previous prime is 123011033113. The next prime is 123011033153. The reversal of 123011033123 is 321330110321.

It is not a de Polignac number, because 123011033123 - 2⁴ = 123011033107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123011033095 and 123011033104.

It is not an unprimeable number, because it can be changed into a prime (123011033113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321383 + ... + 591023.

It is an arithmetic number, because the mean of its divisors is an integer number (8526080040).

Almost surely, 2^123011033123 is an apocalyptic number.

123011033123 is a deficient number, since it is larger than the sum of its proper divisors (13406247517).

123011033123 is a wasteful number, since it uses less digits than its factorization.

123011033123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270338.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123011033123 its reverse (321330110321), we get a palindrome (444341143444).

The spelling of 123011033123 in words is "one hundred twenty-three billion, eleven million, thirty-three thousand, one hundred twenty-three".