12021120043 has 4 divisors (see below), whose sum is σ = 12021348688. Its totient is φ = 12020891400.

The previous prime is 12021119969. The next prime is 12021120061. The reversal of 12021120043 is 34002112021.

12021120043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34002112021 = 1123 ⋅30277927.

It is a cyclic number.

It is not a de Polignac number, because 12021120043 - 2⁹ = 12021119531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021119999 and 12021120026.

It is not an unprimeable number, because it can be changed into a prime (12021120343) 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, 8593 + ... + 155293.

It is an arithmetic number, because the mean of its divisors is an integer number (3005337172).

Almost surely, 2^12021120043 is an apocalyptic number.

12021120043 is a deficient number, since it is larger than the sum of its proper divisors (228645).

12021120043 is an equidigital number, since it uses as much as digits as its factorization.

12021120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228644.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12021120043 its reverse (34002112021), we get a palindrome (46023232064).

The spelling of 12021120043 in words is "twelve billion, twenty-one million, one hundred twenty thousand, forty-three".