12221012105 has 16 divisors (see below), whose sum is σ = 15630724224. Its totient is φ = 9140755200.

The previous prime is 12221012087. The next prime is 12221012117. The reversal of 12221012105 is 50121012221.

12221012105 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 12221012105 - 2⁸ = 12221011849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is an unprimeable number.

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, 463247 + ... + 488916.

It is an arithmetic number, because the mean of its divisors is an integer number (976920264).

Almost surely, 2^12221012105 is an apocalyptic number.

It is an amenable number.

12221012105 is a deficient number, since it is larger than the sum of its proper divisors (3409712119).

12221012105 is a wasteful number, since it uses less digits than its factorization.

12221012105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952336.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 12221012105 its reverse (50121012221), we get a palindrome (62342024326).

The spelling of 12221012105 in words is "twelve billion, two hundred twenty-one million, twelve thousand, one hundred five".