12301322221 has 2 divisors, whose sum is σ = 12301322222. Its totient is φ = 12301322220.

The previous prime is 12301322197. The next prime is 12301322249. The reversal of 12301322221 is 12222310321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12284397225 + 16924996 = 110835^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 12301322221 - 2¹³ = 12301314029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12301322821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6150661110 + 6150661111.

It is an arithmetic number, because the mean of its divisors is an integer number (6150661111).

Almost surely, 2^12301322221 is an apocalyptic number.

It is an amenable number.

12301322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12301322221 is an equidigital number, since it uses as much as digits as its factorization.

12301322221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12301322221 its reverse (12222310321), we get a palindrome (24523632542).

The spelling of 12301322221 in words is "twelve billion, three hundred one million, three hundred twenty-two thousand, two hundred twenty-one".