12032312220 has 72 divisors (see below), whose sum is σ = 37096375680. Its totient is φ = 3156013440.

The previous prime is 12032312179. The next prime is 12032312233. The reversal of 12032312220 is 2221323021.

12032312220 is a `hidden beast` number, since 120 + 323 + 1 + 2 + 220 = 666.

12032312220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12032312220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12032312193 and 12032312202.

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 23 ways as a sum of consecutive naturals, for example, 536940 + ... + 558899.

It is an arithmetic number, because the mean of its divisors is an integer number (515227440).

Almost surely, 2^12032312220 is an apocalyptic number.

12032312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12032312220 is an abundant number, since it is smaller than the sum of its proper divisors (25064063460).

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

12032312220 is a wasteful number, since it uses less digits than its factorization.

12032312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095915 (or 1095910 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12032312220 its reverse (2221323021), we get a palindrome (14253635241).

The spelling of 12032312220 in words is "twelve billion, thirty-two million, three hundred twelve thousand, two hundred twenty".