12130330221 has 24 divisors (see below), whose sum is σ = 18162300000. Its totient is φ = 7792297632.

The previous prime is 12130330213. The next prime is 12130330241. The reversal of 12130330221 is 12203303121.

It is not a de Polignac number, because 12130330221 - 2³ = 12130330213 is a prime.

It is a super-2 number, since 2×12130330221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12130330194 and 12130330203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130330241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83670 + ... + 176808.

It is an arithmetic number, because the mean of its divisors is an integer number (756762500).

Almost surely, 2^12130330221 is an apocalyptic number.

It is an amenable number.

12130330221 is a deficient number, since it is larger than the sum of its proper divisors (6031969779).

12130330221 is a wasteful number, since it uses less digits than its factorization.

12130330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93673 (or 93670 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12130330221 its reverse (12203303121), we get a palindrome (24333633342).

The spelling of 12130330221 in words is "twelve billion, one hundred thirty million, three hundred thirty thousand, two hundred twenty-one".