12208880221 has 4 divisors (see below), whose sum is σ = 12492807712. Its totient is φ = 11924952732.

The previous prime is 12208880183. The next prime is 12208880227.

12208880221 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12208880221 - 2¹⁷ = 12208749149 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 (12208880227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141963681 + ... + 141963766.

It is an arithmetic number, because the mean of its divisors is an integer number (3123201928).

Almost surely, 2^12208880221 is an apocalyptic number.

It is an amenable number.

12208880221 is a deficient number, since it is larger than the sum of its proper divisors (283927491).

12208880221 is an equidigital number, since it uses as much as digits as its factorization.

12208880221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283927490.

The product of its (nonzero) digits is 8192, while the sum is 34.

The spelling of 12208880221 in words is "twelve billion, two hundred eight million, eight hundred eighty thousand, two hundred twenty-one".