12330221021 has 4 divisors (see below), whose sum is σ = 12394777344. Its totient is φ = 12265664700.

The previous prime is 12330221017. The next prime is 12330221039. The reversal of 12330221021 is 12012203321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12012203321 = 8707 ⋅1379603.

It is a cyclic number.

It is not a de Polignac number, because 12330221021 - 2² = 12330221017 is a prime.

It is a super-3 number, since 3×12330221021³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12330221011) 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, 32277875 + ... + 32278256.

It is an arithmetic number, because the mean of its divisors is an integer number (3098694336).

Almost surely, 2^12330221021 is an apocalyptic number.

It is an amenable number.

12330221021 is a deficient number, since it is larger than the sum of its proper divisors (64556323).

12330221021 is an equidigital number, since it uses as much as digits as its factorization.

12330221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64556322.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12330221021 its reverse (12012203321), we get a palindrome (24342424342).

The spelling of 12330221021 in words is "twelve billion, three hundred thirty million, two hundred twenty-one thousand, twenty-one".