12321210123 has 24 divisors (see below), whose sum is σ = 18330858000. Its totient is φ = 7969161024.

The previous prime is 12321210113. The next prime is 12321210127. The reversal of 12321210123 is 32101212321.

12321210123 is a `hidden beast` number, since 12 + 321 + 210 + 123 = 666.

12321210123 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 12321210123 - 2¹⁰ = 12321209099 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 12321210096 and 12321210105.

It is not an unprimeable number, because it can be changed into a prime (12321210127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63208 + ... + 169226.

It is an arithmetic number, because the mean of its divisors is an integer number (763785750).

Almost surely, 2^12321210123 is an apocalyptic number.

12321210123 is a deficient number, since it is larger than the sum of its proper divisors (6009647877).

12321210123 is a wasteful number, since it uses less digits than its factorization.

12321210123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106411 (or 106408 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12321210123 its reverse (32101212321), we get a palindrome (44422422444).

The spelling of 12321210123 in words is "twelve billion, three hundred twenty-one million, two hundred ten thousand, one hundred twenty-three".