12100243123423 has 16 divisors (see below), whose sum is σ = 14892705898560. Its totient is φ = 9573755106816.

The previous prime is 12100243123393. The next prime is 12100243123439. The reversal of 12100243123423 is 32432134200121.

It is a cyclic number.

It is not a de Polignac number, because 12100243123423 - 2¹³ = 12100243115231 is a prime.

It is a super-2 number, since 2×12100243123423² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12100243123391 and 12100243123400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100243123483) 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, 17155143 + ... + 17846551.

It is an arithmetic number, because the mean of its divisors is an integer number (930794118660).

Almost surely, 2^{12100243123423} is an apocalyptic number.

12100243123423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12100243123423 is a deficient number, since it is larger than the sum of its proper divisors (2792462775137).

12100243123423 is a wasteful number, since it uses less digits than its factorization.

12100243123423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883746.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 12100243123423 its reverse (32432134200121), we get a palindrome (44532377323544).

The spelling of 12100243123423 in words is "twelve trillion, one hundred billion, two hundred forty-three million, one hundred twenty-three thousand, four hundred twenty-three".