12663901123 has 2 divisors, whose sum is σ = 12663901124. Its totient is φ = 12663901122.

The previous prime is 12663901121. The next prime is 12663901127. The reversal of 12663901123 is 32110936621.

It is a weak prime.

It is an emirp because it is prime and its reverse (32110936621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12663901123 - 2¹ = 12663901121 is a prime.

It is a super-2 number, since 2×12663901123² (a number of 21 digits) contains 22 as substring.

Together with 12663901121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12663901121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6331950561 + 6331950562.

It is an arithmetic number, because the mean of its divisors is an integer number (6331950562).

Almost surely, 2^12663901123 is an apocalyptic number.

12663901123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12663901123 is an equidigital number, since it uses as much as digits as its factorization.

12663901123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 12663901123 in words is "twelve billion, six hundred sixty-three million, nine hundred one thousand, one hundred twenty-three".