12102330221 has 2 divisors, whose sum is σ = 12102330222. Its totient is φ = 12102330220.

The previous prime is 12102330179. The next prime is 12102330239. The reversal of 12102330221 is 12203320121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6774936100 + 5327394121 = 82310^2 + 72989^2 .

It is an emirp because it is prime and its reverse (12203320121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12102330221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12102330221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102330241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051165110 + 6051165111.

It is an arithmetic number, because the mean of its divisors is an integer number (6051165111).

Almost surely, 2^12102330221 is an apocalyptic number.

It is an amenable number.

12102330221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102330221 is an equidigital number, since it uses as much as digits as its factorization.

12102330221 is an evil number, because the sum of its binary digits is even.

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

Adding to 12102330221 its reverse (12203320121), we get a palindrome (24305650342).

The spelling of 12102330221 in words is "twelve billion, one hundred two million, three hundred thirty thousand, two hundred twenty-one".