12222220211101 has 2 divisors, whose sum is σ = 12222220211102. Its totient is φ = 12222220211100.

The previous prime is 12222220211081. The next prime is 12222220211111. The reversal of 12222220211101 is 10111202222221.

12222220211101 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., 7822923708601 + 4399296502500 = 2796949^2 + 2097450^2 .

It is an emirp because it is prime and its reverse (10111202222221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12222220211101 - 2²⁹ = 12221683340189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222220211111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111110105550 + 6111110105551.

It is an arithmetic number, because the mean of its divisors is an integer number (6111110105551).

Almost surely, 2^{12222220211101} is an apocalyptic number.

It is an amenable number.

12222220211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222220211101 is an equidigital number, since it uses as much as digits as its factorization.

12222220211101 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 12222220211101 its reverse (10111202222221), we get a palindrome (22333422433322).

The spelling of 12222220211101 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty million, two hundred eleven thousand, one hundred one".