11222022221 has 8 divisors (see below), whose sum is σ = 11517194304. Its totient is φ = 10930659040.

The previous prime is 11222022211. The next prime is 11222022233. The reversal of 11222022221 is 12222022211.

It is a happy number.

11222022221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11222022221 - 2⁶ = 11222022157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11222022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222022211) 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 7 ways as a sum of consecutive naturals, for example, 946256 + ... + 958041.

It is an arithmetic number, because the mean of its divisors is an integer number (1439649288).

Almost surely, 2^11222022221 is an apocalyptic number.

It is an amenable number.

11222022221 is a deficient number, since it is larger than the sum of its proper divisors (295172083).

11222022221 is an equidigital number, since it uses as much as digits as its factorization.

11222022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904451.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11222022221 its reverse (12222022211), we get a palindrome (23444044432).

The spelling of 11222022221 in words is "eleven billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty-one".