11000022221 has 4 divisors (see below), whose sum is σ = 11080314492. Its totient is φ = 10919729952.

The previous prime is 11000022199. The next prime is 11000022247. The reversal of 11000022221 is 12222000011.

It is a happy number.

11000022221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8804068900 + 2195953321 = 93830^2 + 46861^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000022221 - 2¹⁴ = 11000005837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000022281) 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 in 3 ways as a sum of consecutive naturals, for example, 40145930 + ... + 40146203.

It is an arithmetic number, because the mean of its divisors is an integer number (2770078623).

Almost surely, 2^11000022221 is an apocalyptic number.

It is an amenable number.

11000022221 is a deficient number, since it is larger than the sum of its proper divisors (80292271).

11000022221 is an equidigital number, since it uses as much as digits as its factorization.

11000022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80292270.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 11000022221 its reverse (12222000011), we get a palindrome (23222022232).

The spelling of 11000022221 in words is "eleven billion, twenty-two thousand, two hundred twenty-one".