12332221221 has 16 divisors (see below), whose sum is σ = 16748729600. Its totient is φ = 8069181120.

The previous prime is 12332221219. The next prime is 12332221283. The reversal of 12332221221 is 12212223321.

It is not a de Polignac number, because 12332221221 - 2¹ = 12332221219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12332221211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11955 + ... + 157503.

It is an arithmetic number, because the mean of its divisors is an integer number (1046795600).

Almost surely, 2^12332221221 is an apocalyptic number.

It is an amenable number.

12332221221 is a deficient number, since it is larger than the sum of its proper divisors (4416508379).

12332221221 is a wasteful number, since it uses less digits than its factorization.

12332221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146076.

The product of its digits is 576, while the sum is 21.

Adding to 12332221221 its reverse (12212223321), we get a palindrome (24544444542).

The spelling of 12332221221 in words is "twelve billion, three hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty-one".