11222211001 has 2 divisors, whose sum is σ = 11222211002. Its totient is φ = 11222211000.

The previous prime is 11222210999. The next prime is 11222211047. The reversal of 11222211001 is 10011222211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7910323600 + 3311887401 = 88940^2 + 57549^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222211001 - 2¹ = 11222210999 is a prime.

Together with 11222210999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11222211401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611105500 + 5611105501.

It is an arithmetic number, because the mean of its divisors is an integer number (5611105501).

Almost surely, 2^11222211001 is an apocalyptic number.

It is an amenable number.

11222211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222211001 is an equidigital number, since it uses as much as digits as its factorization.

11222211001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11222211001 its reverse (10011222211), we get a palindrome (21233433212).

The spelling of 11222211001 in words is "eleven billion, two hundred twenty-two million, two hundred eleven thousand, one".