12105504222 has 64 divisors (see below), whose sum is σ = 28360088064. Its totient is φ = 3372687360.

The previous prime is 12105504221. The next prime is 12105504227. The reversal of 12105504222 is 22240550121.

It is a junction number, because it is equal to n+sod(n) for n = 12105504192 and 12105504201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105504221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1152418 + ... + 1162874.

It is an arithmetic number, because the mean of its divisors is an integer number (443126376).

Almost surely, 2^12105504222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12105504222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14180044032).

12105504222 is an abundant number, since it is smaller than the sum of its proper divisors (16254583842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12105504222 is a wasteful number, since it uses less digits than its factorization.

12105504222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11153.

The product of its (nonzero) digits is 1600, while the sum is 24.

The spelling of 12105504222 in words is "twelve billion, one hundred five million, five hundred four thousand, two hundred twenty-two".