12221012132 has 12 divisors (see below), whose sum is σ = 24442024320. Its totient is φ = 5237576616.

The previous prime is 12221012131. The next prime is 12221012137. The reversal of 12221012132 is 23121012221.

12221012132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

12221012132 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12221012132.

It is not an unprimeable number, because it can be changed into a prime (12221012131) 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 3 ways as a sum of consecutive naturals, for example, 218232332 + ... + 218232387.

It is an arithmetic number, because the mean of its divisors is an integer number (2036835360).

Almost surely, 2^12221012132 is an apocalyptic number.

It is an amenable number.

12221012132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12221012132 is a wasteful number, since it uses less digits than its factorization.

12221012132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436464730 (or 436464728 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12221012132 its reverse (23121012221), we get a palindrome (35342024353).

The spelling of 12221012132 in words is "twelve billion, two hundred twenty-one million, twelve thousand, one hundred thirty-two".