12011203322221 has 2 divisors, whose sum is σ = 12011203322222. Its totient is φ = 12011203322220.

The previous prime is 12011203322219. The next prime is 12011203322243. The reversal of 12011203322221 is 12222330211021.

12011203322221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (12011203322243) can be obtained adding 12011203322221 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7078313460100 + 4932889862121 = 2660510^2 + 2221011^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011203322221 - 2¹ = 12011203322219 is a prime.

Together with 12011203322219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12011203322192 and 12011203322201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011203328221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005601661110 + 6005601661111.

It is an arithmetic number, because the mean of its divisors is an integer number (6005601661111).

Almost surely, 2^{12011203322221} is an apocalyptic number.

It is an amenable number.

12011203322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011203322221 is an equidigital number, since it uses as much as digits as its factorization.

12011203322221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12011203322221 its reverse (12222330211021), we get a palindrome (24233533533242).

The spelling of 12011203322221 in words is "twelve trillion, eleven billion, two hundred three million, three hundred twenty-two thousand, two hundred twenty-one".