12008708765221 has 16 divisors (see below), whose sum is σ = 13823615433600. Its totient is φ = 10218653180928.

The previous prime is 12008708765203. The next prime is 12008708765243. The reversal of 12008708765221 is 12256780780021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12008708765221 - 2⁷ = 12008708765093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12008708763221) 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, 21552225 + ... + 22102393.

It is an arithmetic number, because the mean of its divisors is an integer number (863975964600).

Almost surely, 2^{12008708765221} is an apocalyptic number.

It is an amenable number.

12008708765221 is a deficient number, since it is larger than the sum of its proper divisors (1814906668379).

12008708765221 is a wasteful number, since it uses less digits than its factorization.

12008708765221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572748.

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 12008708765221 in words is "twelve trillion, eight billion, seven hundred eight million, seven hundred sixty-five thousand, two hundred twenty-one".