12303013331221 has 2 divisors, whose sum is σ = 12303013331222. Its totient is φ = 12303013331220.

The previous prime is 12303013331177. The next prime is 12303013331239. The reversal of 12303013331221 is 12213331030321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12253598264196 + 49415067025 = 3500514^2 + 222295^2 .

It is a cyclic number.

It is not a de Polignac number, because 12303013331221 - 2¹⁹ = 12303012806933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12303013331621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6151506665610 + 6151506665611.

It is an arithmetic number, because the mean of its divisors is an integer number (6151506665611).

Almost surely, 2^{12303013331221} is an apocalyptic number.

It is an amenable number.

12303013331221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12303013331221 is an equidigital number, since it uses as much as digits as its factorization.

12303013331221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 12303013331221 its reverse (12213331030321), we get a palindrome (24516344361542).

The spelling of 12303013331221 in words is "twelve trillion, three hundred three billion, thirteen million, three hundred thirty-one thousand, two hundred twenty-one".