11102221221211 has 2 divisors, whose sum is σ = 11102221221212. Its totient is φ = 11102221221210.

The previous prime is 11102221221209. The next prime is 11102221221233. The reversal of 11102221221211 is 11212212220111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11102221221211 - 2¹ = 11102221221209 is a prime.

Together with 11102221221209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11102221221251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551110610605 + 5551110610606.

It is an arithmetic number, because the mean of its divisors is an integer number (5551110610606).

Almost surely, 2^{11102221221211} is an apocalyptic number.

11102221221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102221221211 is an equidigital number, since it uses as much as digits as its factorization.

11102221221211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11102221221211 its reverse (11212212220111), we get a palindrome (22314433441322).

The spelling of 11102221221211 in words is "eleven trillion, one hundred two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".