12356056123 has 4 divisors (see below), whose sum is σ = 12356298360. Its totient is φ = 12355813888.

The previous prime is 12356056121. The next prime is 12356056151. The reversal of 12356056123 is 32165065321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32165065321 = 227 ⋅141696323.

It is a cyclic number.

It is not a de Polignac number, because 12356056123 - 2¹ = 12356056121 is a prime.

It is a super-2 number, since 2×12356056123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12356056121) 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, 11590 + ... + 157627.

It is an arithmetic number, because the mean of its divisors is an integer number (3089074590).

Almost surely, 2^12356056123 is an apocalyptic number.

12356056123 is a deficient number, since it is larger than the sum of its proper divisors (242237).

12356056123 is an equidigital number, since it uses as much as digits as its factorization.

12356056123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242236.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 12356056123 in words is "twelve billion, three hundred fifty-six million, fifty-six thousand, one hundred twenty-three".