12120023132 has 12 divisors (see below), whose sum is σ = 24240046320. Its totient is φ = 5194295616.

The previous prime is 12120023117. The next prime is 12120023137. The reversal of 12120023132 is 23132002121.

12120023132 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120023132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120023137) 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, 216428957 + ... + 216429012.

It is an arithmetic number, because the mean of its divisors is an integer number (2020003860).

Almost surely, 2^12120023132 is an apocalyptic number.

It is an amenable number.

12120023132 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.

12120023132 is a wasteful number, since it uses less digits than its factorization.

12120023132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432857980 (or 432857978 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12120023132 its reverse (23132002121), we get a palindrome (35252025253).

The spelling of 12120023132 in words is "twelve billion, one hundred twenty million, twenty-three thousand, one hundred thirty-two".