12041021243 has 2 divisors, whose sum is σ = 12041021244. Its totient is φ = 12041021242.

The previous prime is 12041021233. The next prime is 12041021329. The reversal of 12041021243 is 34212014021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12041021243 - 2⁸ = 12041020987 is a prime.

It is not a weakly prime, because it can be changed into another prime (12041021233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6020510621 + 6020510622.

It is an arithmetic number, because the mean of its divisors is an integer number (6020510622).

Almost surely, 2^12041021243 is an apocalyptic number.

12041021243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12041021243 is an equidigital number, since it uses as much as digits as its factorization.

12041021243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12041021243 its reverse (34212014021), we get a palindrome (46253035264).

The spelling of 12041021243 in words is "twelve billion, forty-one million, twenty-one thousand, two hundred forty-three".