12030232221 has 12 divisors (see below), whose sum is σ = 19859431072. Its totient is φ = 6874418376.

The previous prime is 12030232211. The next prime is 12030232229. The reversal of 12030232221 is 12223203021.

12030232221 is a `hidden beast` number, since 1 + 20 + 302 + 322 + 21 = 666.

It is not a de Polignac number, because 12030232221 - 2¹⁴ = 12030215837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12030232194 and 12030232203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030232229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95477971 + ... + 95478096.

Almost surely, 2^12030232221 is an apocalyptic number.

It is an amenable number.

12030232221 is a deficient number, since it is larger than the sum of its proper divisors (7829198851).

12030232221 is a wasteful number, since it uses less digits than its factorization.

12030232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190956080 (or 190956077 counting only the distinct ones).

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

Adding to 12030232221 its reverse (12223203021), we get a palindrome (24253435242).

The spelling of 12030232221 in words is "twelve billion, thirty million, two hundred thirty-two thousand, two hundred twenty-one".