12222012110221 has 2 divisors, whose sum is σ = 12222012110222. Its totient is φ = 12222012110220.

The previous prime is 12222012110219. The next prime is 12222012110291. The reversal of 12222012110221 is 12201121022221.

12222012110221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11296394942121 + 925617168100 = 3361011^2 + 962090^2 .

It is an emirp because it is prime and its reverse (12201121022221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12222012110221 - 2¹ = 12222012110219 is a prime.

Together with 12222012110219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222012110291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111006055110 + 6111006055111.

It is an arithmetic number, because the mean of its divisors is an integer number (6111006055111).

Almost surely, 2^{12222012110221} is an apocalyptic number.

It is an amenable number.

12222012110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222012110221 is an equidigital number, since it uses as much as digits as its factorization.

12222012110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12222012110221 its reverse (12201121022221), we get a palindrome (24423133132442).

The spelling of 12222012110221 in words is "twelve trillion, two hundred twenty-two billion, twelve million, one hundred ten thousand, two hundred twenty-one".