12230131320221 has 2 divisors, whose sum is σ = 12230131320222. Its totient is φ = 12230131320220.

The previous prime is 12230131320217. The next prime is 12230131320229. The reversal of 12230131320221 is 12202313103221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9497768604025 + 2732362716196 = 3081845^2 + 1652986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12230131320221 - 2² = 12230131320217 is a prime.

It is a super-2 number, since 2×12230131320221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12230131320229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115065660110 + 6115065660111.

It is an arithmetic number, because the mean of its divisors is an integer number (6115065660111).

Almost surely, 2^{12230131320221} is an apocalyptic number.

It is an amenable number.

12230131320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12230131320221 is an equidigital number, since it uses as much as digits as its factorization.

12230131320221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12230131320221 its reverse (12202313103221), we get a palindrome (24432444423442).

The spelling of 12230131320221 in words is "twelve trillion, two hundred thirty billion, one hundred thirty-one million, three hundred twenty thousand, two hundred twenty-one".