12001220011243 has 2 divisors, whose sum is σ = 12001220011244. Its totient is φ = 12001220011242.

The previous prime is 12001220011217. The next prime is 12001220011279. The reversal of 12001220011243 is 34211002210021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001220011243 - 2⁵ = 12001220011211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12001220011243.

It is not a weakly prime, because it can be changed into another prime (12001220011213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000610005621 + 6000610005622.

It is an arithmetic number, because the mean of its divisors is an integer number (6000610005622).

Almost surely, 2^{12001220011243} is an apocalyptic number.

12001220011243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001220011243 is an equidigital number, since it uses as much as digits as its factorization.

12001220011243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12001220011243 its reverse (34211002210021), we get a palindrome (46212222221264).

The spelling of 12001220011243 in words is "twelve trillion, one billion, two hundred twenty million, eleven thousand, two hundred forty-three".