12034043021 has 24 divisors (see below), whose sum is σ = 16280017152. Its totient is φ = 8655847200.

The previous prime is 12034043017. The next prime is 12034043023.

12034043021 is nontrivially palindromic in base 10.

12034043021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12034043021 - 2² = 12034043017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12034042984 and 12034043002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12034043023) 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 23 ways as a sum of consecutive naturals, for example, 535445 + ... + 557466.

It is an arithmetic number, because the mean of its divisors is an integer number (678334048).

Almost surely, 2^12034043021 is an apocalyptic number.

12034043021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12034043021 is a deficient number, since it is larger than the sum of its proper divisors (4245974131).

12034043021 is a wasteful number, since it uses less digits than its factorization.

12034043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092953 (or 1092942 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

It can be divided in two parts, 120340 and 43021, that added together give a palindrome (163361).

The spelling of 12034043021 in words is "twelve billion, thirty-four million, forty-three thousand, twenty-one".