12120422132 has 96 divisors (see below), whose sum is σ = 26802074880. Its totient is φ = 4667489280.

The previous prime is 12120422131. The next prime is 12120422147. The reversal of 12120422132 is 23122402121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120422131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11893919 + ... + 11894937.

It is an arithmetic number, because the mean of its divisors is an integer number (279188280).

Almost surely, 2^12120422132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12120422132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13401037440).

12120422132 is an abundant number, since it is smaller than the sum of its proper divisors (14681652748).

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

12120422132 is a wasteful number, since it uses less digits than its factorization.

12120422132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12120422132 its reverse (23122402121), we get a palindrome (35242824253).

The spelling of 12120422132 in words is "twelve billion, one hundred twenty million, four hundred twenty-two thousand, one hundred thirty-two".