12221061315663 has 8 divisors (see below), whose sum is σ = 16294953413808. Its totient is φ = 8147271713984.

The previous prime is 12221061315583. The next prime is 12221061315667. The reversal of 12221061315663 is 36651316012221.

It is a happy number.

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 12221061315663 - 2³⁰ = 12219987573839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221061315667) 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, 25345470 + ... + 25823147.

It is an arithmetic number, because the mean of its divisors is an integer number (2036869176726).

Almost surely, 2^{12221061315663} is an apocalyptic number.

12221061315663 is a deficient number, since it is larger than the sum of its proper divisors (4073892098145).

12221061315663 is an equidigital number, since it uses as much as digits as its factorization.

12221061315663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51248233.

The product of its (nonzero) digits is 77760, while the sum is 39.

Adding to 12221061315663 its reverse (36651316012221), we get a palindrome (48872377327884).

The spelling of 12221061315663 in words is "twelve trillion, two hundred twenty-one billion, sixty-one million, three hundred fifteen thousand, six hundred sixty-three".