12041001243 has 16 divisors (see below), whose sum is σ = 18130957600. Its totient is φ = 7895737440.

The previous prime is 12041001221. The next prime is 12041001251. The reversal of 12041001243 is 34210014021.

12041001243 is a `hidden beast` number, since 12 + 0 + 410 + 0 + 1 + 243 = 666.

It is not a de Polignac number, because 12041001243 - 2⁵ = 12041001211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12041001283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3653788 + ... + 3657081.

It is an arithmetic number, because the mean of its divisors is an integer number (1133184850).

Almost surely, 2^12041001243 is an apocalyptic number.

12041001243 is a deficient number, since it is larger than the sum of its proper divisors (6089956357).

12041001243 is an equidigital number, since it uses as much as digits as its factorization.

12041001243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310939 (or 7310933 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12041001243 its reverse (34210014021), we get a palindrome (46251015264).

The spelling of 12041001243 in words is "twelve billion, forty-one million, one thousand, two hundred forty-three".