11222220112221 has 8 divisors (see below), whose sum is σ = 14962995695104. Its totient is φ = 7481462302080.

The previous prime is 11222220112151. The next prime is 11222220112231. The reversal of 11222220112221 is 12221102222211.

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

It is not a de Polignac number, because 11222220112221 - 2¹⁰ = 11222220111197 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 (11222220112231) 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 in 7 ways as a sum of consecutive naturals, for example, 2892541 + ... + 5550786.

It is an arithmetic number, because the mean of its divisors is an integer number (1870374461888).

Almost surely, 2^{11222220112221} is an apocalyptic number.

It is an amenable number.

11222220112221 is a deficient number, since it is larger than the sum of its proper divisors (3740775582883).

11222220112221 is an equidigital number, since it uses as much as digits as its factorization.

11222220112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8886371.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11222220112221 its reverse (12221102222211), we get a palindrome (23443322334432).

The spelling of 11222220112221 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twelve thousand, two hundred twenty-one".