12365551123 has 2 divisors, whose sum is σ = 12365551124. Its totient is φ = 12365551122.

The previous prime is 12365551067. The next prime is 12365551127. The reversal of 12365551123 is 32115556321.

It is a strong prime.

It is an emirp because it is prime and its reverse (32115556321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12365551123 - 2⁹ = 12365550611 is a prime.

It is a super-2 number, since 2×12365551123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12365551127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6182775561 + 6182775562.

It is an arithmetic number, because the mean of its divisors is an integer number (6182775562).

Almost surely, 2^12365551123 is an apocalyptic number.

12365551123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12365551123 is an equidigital number, since it uses as much as digits as its factorization.

12365551123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 34.

The spelling of 12365551123 in words is "twelve billion, three hundred sixty-five million, five hundred fifty-one thousand, one hundred twenty-three".