2212221201811 has 2 divisors, whose sum is σ = 2212221201812. Its totient is φ = 2212221201810.

The previous prime is 2212221201791. The next prime is 2212221201829. The reversal of 2212221201811 is 1181021222122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2212221201811 - 2¹⁷ = 2212221070739 is a prime.

It is not a weakly prime, because it can be changed into another prime (2212221301811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106110600905 + 1106110600906.

It is an arithmetic number, because the mean of its divisors is an integer number (1106110600906).

Almost surely, 2^{2212221201811} is an apocalyptic number.

2212221201811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212221201811 is an equidigital number, since it uses as much as digits as its factorization.

2212221201811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 25.

Adding to 2212221201811 its reverse (1181021222122), we get a palindrome (3393242423933).

The spelling of 2212221201811 in words is "two trillion, two hundred twelve billion, two hundred twenty-one million, two hundred one thousand, eight hundred eleven".