12012130355443 has 4 divisors (see below), whose sum is σ = 12426341747040. Its totient is φ = 11597918963848.

The previous prime is 12012130355429. The next prime is 12012130355503. The reversal of 12012130355443 is 34455303121021.

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 12012130355443 - 2¹⁷ = 12012130224371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012130355399 and 12012130355408.

It is not an unprimeable number, because it can be changed into a prime (12012130355243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207105695755 + ... + 207105695812.

It is an arithmetic number, because the mean of its divisors is an integer number (3106585436760).

Almost surely, 2^{12012130355443} is an apocalyptic number.

12012130355443 is a deficient number, since it is larger than the sum of its proper divisors (414211391597).

12012130355443 is an equidigital number, since it uses as much as digits as its factorization.

12012130355443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414211391596.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 12012130355443 its reverse (34455303121021), we get a palindrome (46467433476464).

The spelling of 12012130355443 in words is "twelve trillion, twelve billion, one hundred thirty million, three hundred fifty-five thousand, four hundred forty-three".