12116402123 has 16 divisors (see below), whose sum is σ = 14417618880. Its totient is φ = 9966067200.

The previous prime is 12116402071. The next prime is 12116402131. The reversal of 12116402123 is 32120461121.

It is a cyclic number.

It is not a de Polignac number, because 12116402123 - 2⁶ = 12116402059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12116402423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328538 + ... + 363551.

It is an arithmetic number, because the mean of its divisors is an integer number (901101180).

Almost surely, 2^12116402123 is an apocalyptic number.

12116402123 is a deficient number, since it is larger than the sum of its proper divisors (2301216757).

12116402123 is an equidigital number, since it uses as much as digits as its factorization.

12116402123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692198.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12116402123 its reverse (32120461121), we get a palindrome (44236863244).

The spelling of 12116402123 in words is "twelve billion, one hundred sixteen million, four hundred two thousand, one hundred twenty-three".