2221113121211 has 2 divisors, whose sum is σ = 2221113121212. Its totient is φ = 2221113121210.

The previous prime is 2221113121181. The next prime is 2221113121223. The reversal of 2221113121211 is 1121213111222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221113121211 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221113120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110556560605 + 1110556560606.

It is an arithmetic number, because the mean of its divisors is an integer number (1110556560606).

Almost surely, 2^{2221113121211} is an apocalyptic number.

2221113121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221113121211 is an equidigital number, since it uses as much as digits as its factorization.

2221113121211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 20.

Adding to 2221113121211 its reverse (1121213111222), we get a palindrome (3342326232433).

The spelling of 2221113121211 in words is "two trillion, two hundred twenty-one billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred eleven".