12221332005 has 16 divisors (see below), whose sum is σ = 19874692224. Its totient is φ = 6411190080.

The previous prime is 12221331959. The next prime is 12221332007. The reversal of 12221332005 is 50023312221.

12221332005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12221332005 - 2²⁰ = 12220283429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221332007) 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 15 ways as a sum of consecutive naturals, for example, 6677409 + ... + 6679238.

It is an arithmetic number, because the mean of its divisors is an integer number (1242168264).

Almost surely, 2^12221332005 is an apocalyptic number.

12221332005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12221332005 is a deficient number, since it is larger than the sum of its proper divisors (7653360219).

12221332005 is a wasteful number, since it uses less digits than its factorization.

12221332005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13356716.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 12221332005 its reverse (50023312221), we get a palindrome (62244644226).

The spelling of 12221332005 in words is "twelve billion, two hundred twenty-one million, three hundred thirty-two thousand, five".