12262143122221 has 2 divisors, whose sum is σ = 12262143122222. Its totient is φ = 12262143122220.

The previous prime is 12262143122191. The next prime is 12262143122231. The reversal of 12262143122221 is 12222134126221.

12262143122221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9991832492196 + 2270310630025 = 3160986^2 + 1506755^2 .

It is an emirp because it is prime and its reverse (12222134126221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12262143122221 - 2⁵ = 12262143122189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12262143122231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6131071561110 + 6131071561111.

It is an arithmetic number, because the mean of its divisors is an integer number (6131071561111).

Almost surely, 2^{12262143122221} is an apocalyptic number.

It is an amenable number.

12262143122221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12262143122221 is an equidigital number, since it uses as much as digits as its factorization.

12262143122221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

Adding to 12262143122221 its reverse (12222134126221), we get a palindrome (24484277248442).

The spelling of 12262143122221 in words is "twelve trillion, two hundred sixty-two billion, one hundred forty-three million, one hundred twenty-two thousand, two hundred twenty-one".