12201332321 has 4 divisors (see below), whose sum is σ = 12373182144. Its totient is φ = 12029482500.

The previous prime is 12201332251. The next prime is 12201332329. The reversal of 12201332321 is 12323310221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12201332321 - 2³⁰ = 11127590497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201332293 and 12201332302.

It is not an unprimeable number, because it can be changed into a prime (12201332329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85924805 + ... + 85924946.

It is an arithmetic number, because the mean of its divisors is an integer number (3093295536).

Almost surely, 2^12201332321 is an apocalyptic number.

It is an amenable number.

12201332321 is a deficient number, since it is larger than the sum of its proper divisors (171849823).

12201332321 is an equidigital number, since it uses as much as digits as its factorization.

12201332321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171849822.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12201332321 its reverse (12323310221), we get a palindrome (24524642542).

The spelling of 12201332321 in words is "twelve billion, two hundred one million, three hundred thirty-two thousand, three hundred twenty-one".