12003031321123 has 4 divisors (see below), whose sum is σ = 12003794063640. Its totient is φ = 12002268578608.

The previous prime is 12003031321109. The next prime is 12003031321139. The reversal of 12003031321123 is 32112313030021.

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 12003031321123 - 2⁵ = 12003031321091 is a prime.

It is a super-2 number, since 2×12003031321123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12003031321094 and 12003031321103.

It is not an unprimeable number, because it can be changed into a prime (12003031321163) 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, 381347653 + ... + 381379126.

It is an arithmetic number, because the mean of its divisors is an integer number (3000948515910).

Almost surely, 2^{12003031321123} is an apocalyptic number.

12003031321123 is a deficient number, since it is larger than the sum of its proper divisors (762742517).

12003031321123 is an equidigital number, since it uses as much as digits as its factorization.

12003031321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762742516.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 12003031321123 its reverse (32112313030021), we get a palindrome (44115344351144).

The spelling of 12003031321123 in words is "twelve trillion, three billion, thirty-one million, three hundred twenty-one thousand, one hundred twenty-three".