12132112220 has 96 divisors (see below), whose sum is σ = 28546753536. Its totient is φ = 4307072000.

The previous prime is 12132112193. The next prime is 12132112231. The reversal of 12132112220 is 2221123121.

12132112220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 544295 + ... + 566145.

It is an arithmetic number, because the mean of its divisors is an integer number (297362016).

Almost surely, 2^12132112220 is an apocalyptic number.

12132112220 is a gapful number since it is divisible by the number (10) 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 12132112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14273376768).

12132112220 is an abundant number, since it is smaller than the sum of its proper divisors (16414641316).

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

12132112220 is a wasteful number, since it uses less digits than its factorization.

12132112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21971 (or 21969 counting only the distinct ones).

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

Adding to 12132112220 its reverse (2221123121), we get a palindrome (14353235341).

The spelling of 12132112220 in words is "twelve billion, one hundred thirty-two million, one hundred twelve thousand, two hundred twenty".