12032220321 has 48 divisors (see below), whose sum is σ = 19658358720. Its totient is φ = 7024752000.

The previous prime is 12032220313. The next prime is 12032220331. The reversal of 12032220321 is 12302223021.

12032220321 is a `hidden beast` number, since 1 + 2 + 0 + 322 + 20 + 321 = 666.

It is not a de Polignac number, because 12032220321 - 2³ = 12032220313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12032220294 and 12032220303.

It is not an unprimeable number, because it can be changed into a prime (12032220331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1318986 + ... + 1328076.

It is an arithmetic number, because the mean of its divisors is an integer number (409549140).

Almost surely, 2^12032220321 is an apocalyptic number.

12032220321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12032220321 is a deficient number, since it is larger than the sum of its proper divisors (7626138399).

12032220321 is a wasteful number, since it uses less digits than its factorization.

12032220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9598 (or 9595 counting only the distinct ones).

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

Adding to 12032220321 its reverse (12302223021), we get a palindrome (24334443342).

The spelling of 12032220321 in words is "twelve billion, thirty-two million, two hundred twenty thousand, three hundred twenty-one".