12221563663 has 4 divisors (see below), whose sum is σ = 12224493760. Its totient is φ = 12218633568.

The previous prime is 12221563661. The next prime is 12221563723. The reversal of 12221563663 is 36636512221.

12221563663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12221563663 - 2¹ = 12221563661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221563661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458783 + ... + 1467136.

It is an arithmetic number, because the mean of its divisors is an integer number (3056123440).

Almost surely, 2^12221563663 is an apocalyptic number.

12221563663 is a deficient number, since it is larger than the sum of its proper divisors (2930097).

12221563663 is an equidigital number, since it uses as much as digits as its factorization.

12221563663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930096.

The product of its digits is 77760, while the sum is 37.

The spelling of 12221563663 in words is "twelve billion, two hundred twenty-one million, five hundred sixty-three thousand, six hundred sixty-three".