12005217124723 has 2 divisors, whose sum is σ = 12005217124724. Its totient is φ = 12005217124722.

The previous prime is 12005217124687. The next prime is 12005217124751. The reversal of 12005217124723 is 32742171250021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12005217124723 - 2²¹ = 12005215027571 is a prime.

It is a super-3 number, since 3×12005217124723³ (a number of 40 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12005217124753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6002608562361 + 6002608562362.

It is an arithmetic number, because the mean of its divisors is an integer number (6002608562362).

Almost surely, 2^{12005217124723} is an apocalyptic number.

12005217124723 is a deficient number, since it is larger than the sum of its proper divisors (1).

12005217124723 is an equidigital number, since it uses as much as digits as its factorization.

12005217124723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

Adding to 12005217124723 its reverse (32742171250021), we get a palindrome (44747388374744).

The spelling of 12005217124723 in words is "twelve trillion, five billion, two hundred seventeen million, one hundred twenty-four thousand, seven hundred twenty-three".