12023021143123 has 4 divisors (see below), whose sum is σ = 12545761192848. Its totient is φ = 11500281093400.

The previous prime is 12023021143117. The next prime is 12023021143141. The reversal of 12023021143123 is 32134112032021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12023021143123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12023021143153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261370024828 + ... + 261370024873.

It is an arithmetic number, because the mean of its divisors is an integer number (3136440298212).

Almost surely, 2^{12023021143123} is an apocalyptic number.

12023021143123 is a deficient number, since it is larger than the sum of its proper divisors (522740049725).

12023021143123 is an equidigital number, since it uses as much as digits as its factorization.

12023021143123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522740049724.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12023021143123 its reverse (32134112032021), we get a palindrome (44157133175144).

It can be divided in two parts, 12023021 and 143123, that added together give a square (12166144 = 3488²).

The spelling of 12023021143123 in words is "twelve trillion, twenty-three billion, twenty-one million, one hundred forty-three thousand, one hundred twenty-three".