12120011232 has 144 divisors (see below), whose sum is σ = 38957466240. Its totient is φ = 3280580352.

The previous prime is 12120011219. The next prime is 12120011257. The reversal of 12120011232 is 23211002121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21573 + ... + 157179.

It is an arithmetic number, because the mean of its divisors is an integer number (270537960).

Almost surely, 2^12120011232 is an apocalyptic number.

12120011232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12120011232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19478733120).

12120011232 is an abundant number, since it is smaller than the sum of its proper divisors (26837455008).

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

12120011232 is a wasteful number, since it uses less digits than its factorization.

12120011232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135653 (or 135638 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12120011232 its reverse (23211002121), we get a palindrome (35331013353).

The spelling of 12120011232 in words is "twelve billion, one hundred twenty million, eleven thousand, two hundred thirty-two".