12008021215863 has 8 divisors (see below), whose sum is σ = 16012434716928. Its totient is φ = 8004477596024.

The previous prime is 12008021215859. The next prime is 12008021215937. The reversal of 12008021215863 is 36851212080021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12008021215863 - 2² = 12008021215859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12008021215823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217438095 + ... + 217493312.

It is an arithmetic number, because the mean of its divisors is an integer number (2001554339616).

Almost surely, 2^{12008021215863} is an apocalyptic number.

12008021215863 is a deficient number, since it is larger than the sum of its proper divisors (4004413501065).

12008021215863 is an equidigital number, since it uses as much as digits as its factorization.

12008021215863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434940613.

The product of its (nonzero) digits is 46080, while the sum is 39.

Adding to 12008021215863 its reverse (36851212080021), we get a palindrome (48859233295884).

The spelling of 12008021215863 in words is "twelve trillion, eight billion, twenty-one million, two hundred fifteen thousand, eight hundred sixty-three".