12008708763221 has 2 divisors, whose sum is σ = 12008708763222. Its totient is φ = 12008708763220.

The previous prime is 12008708763203. The next prime is 12008708763229. The reversal of 12008708763221 is 12236780780021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9359500048900 + 2649208714321 = 3059330^2 + 1627639^2 .

It is a cyclic number.

It is not a de Polignac number, because 12008708763221 - 2⁶ = 12008708763157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12008708763229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6004354381610 + 6004354381611.

It is an arithmetic number, because the mean of its divisors is an integer number (6004354381611).

Almost surely, 2^{12008708763221} is an apocalyptic number.

It is an amenable number.

12008708763221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12008708763221 is an equidigital number, since it uses as much as digits as its factorization.

12008708763221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 12008708763221 in words is "twelve trillion, eight billion, seven hundred eight million, seven hundred sixty-three thousand, two hundred twenty-one".