3121123113123 has 16 divisors (see below), whose sum is σ = 4209015225600. Its totient is φ = 2057069735136.

The previous prime is 3121123113103. The next prime is 3121123113181. The reversal of 3121123113123 is 3213113211213.

It is not a de Polignac number, because 3121123113123 - 2⁸ = 3121123112867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3121123113093 and 3121123113102.

It is not an unprimeable number, because it can be changed into a prime (3121123113103) 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 in 15 ways as a sum of consecutive naturals, for example, 9826348 + ... + 10139001.

It is an arithmetic number, because the mean of its divisors is an integer number (263063451600).

Almost surely, 2^{3121123113123} is an apocalyptic number.

3121123113123 is a deficient number, since it is larger than the sum of its proper divisors (1087892112477).

3121123113123 is a wasteful number, since it uses less digits than its factorization.

3121123113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19965946.

The product of its digits is 648, while the sum is 24.

Adding to 3121123113123 its reverse (3213113211213), we get a palindrome (6334236324336).

The spelling of 3121123113123 in words is "three trillion, one hundred twenty-one billion, one hundred twenty-three million, one hundred thirteen thousand, one hundred twenty-three".