12000043001 has 4 divisors (see below), whose sum is σ = 12000814692. Its totient is φ = 11999271312.

The previous prime is 12000042983. The next prime is 12000043021. The reversal of 12000043001 is 10034000021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11772033001 + 228010000 = 108499^2 + 15100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12000043001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000043021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362030 + ... + 393783.

It is an arithmetic number, because the mean of its divisors is an integer number (3000203673).

Almost surely, 2^12000043001 is an apocalyptic number.

It is an amenable number.

12000043001 is a deficient number, since it is larger than the sum of its proper divisors (771691).

12000043001 is an equidigital number, since it uses as much as digits as its factorization.

12000043001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771690.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 12000043001 its reverse (10034000021), we get a palindrome (22034043022).

The spelling of 12000043001 in words is "twelve billion, forty-three thousand, one".