12123231101203 has 4 divisors (see below), whose sum is σ = 12139770298528. Its totient is φ = 12106691903880.

The previous prime is 12123231101183. The next prime is 12123231101213. The reversal of 12123231101203 is 30210113232121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12123231101203 - 2³⁷ = 11985792147731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123231101213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8269597563 + ... + 8269599028.

It is an arithmetic number, because the mean of its divisors is an integer number (3034942574632).

Almost surely, 2^{12123231101203} is an apocalyptic number.

12123231101203 is a deficient number, since it is larger than the sum of its proper divisors (16539197325).

12123231101203 is an equidigital number, since it uses as much as digits as its factorization.

12123231101203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16539197324.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12123231101203 its reverse (30210113232121), we get a palindrome (42333344333324).

The spelling of 12123231101203 in words is "twelve trillion, one hundred twenty-three billion, two hundred thirty-one million, one hundred one thousand, two hundred three".