12003012021123 has 24 divisors (see below), whose sum is σ = 17359565143856. Its totient is φ = 7991915284800.

The previous prime is 12003012021061. The next prime is 12003012021139. The reversal of 12003012021123 is 32112021030021.

12003012021123 is a `hidden beast` number, since 1 + 200 + 301 + 20 + 21 + 123 = 666.

It is not a de Polignac number, because 12003012021123 - 2⁶ = 12003012021059 is a prime.

It is a super-2 number, since 2×12003012021123² (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 = 12003012021096 and 12003012021105.

It is not an unprimeable number, because it can be changed into a prime (12003412021123) 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, 22946313 + ... + 23463573.

Almost surely, 2^{12003012021123} is an apocalyptic number.

12003012021123 is a deficient number, since it is larger than the sum of its proper divisors (5356553122733).

12003012021123 is a wasteful number, since it uses less digits than its factorization.

12003012021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520515 (or 520512 counting only the distinct ones).

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

Adding to 12003012021123 its reverse (32112021030021), we get a palindrome (44115033051144).

The spelling of 12003012021123 in words is "twelve trillion, three billion, twelve million, twenty-one thousand, one hundred twenty-three".