11222111212211 has 2 divisors, whose sum is σ = 11222111212212. Its totient is φ = 11222111212210.

The previous prime is 11222111212163. The next prime is 11222111212241. The reversal of 11222111212211 is 11221211122211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11222111212211 - 2¹⁰ = 11222111211187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11222111212241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611055606105 + 5611055606106.

It is an arithmetic number, because the mean of its divisors is an integer number (5611055606106).

Almost surely, 2^{11222111212211} is an apocalyptic number.

11222111212211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222111212211 is an equidigital number, since it uses as much as digits as its factorization.

11222111212211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 20.

Adding to 11222111212211 its reverse (11221211122211), we get a palindrome (22443322334422).

The spelling of 11222111212211 in words is "eleven trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twelve thousand, two hundred eleven".