11122210220221 has 16 divisors (see below), whose sum is σ = 12133454724864. Its totient is φ = 10154574029824.

The previous prime is 11122210220171. The next prime is 11122210220243. The reversal of 11122210220221 is 12202201222111.

It is not a de Polignac number, because 11122210220221 - 2¹⁷ = 11122210089149 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 (11122210220291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61503355 + ... + 61683928.

It is an arithmetic number, because the mean of its divisors is an integer number (758340920304).

Almost surely, 2^{11122210220221} is an apocalyptic number.

It is an amenable number.

11122210220221 is a deficient number, since it is larger than the sum of its proper divisors (1011244504643).

11122210220221 is a wasteful number, since it uses less digits than its factorization.

11122210220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123187460.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11122210220221 its reverse (12202201222111), we get a palindrome (23324411442332).

The spelling of 11122210220221 in words is "eleven trillion, one hundred twenty-two billion, two hundred ten million, two hundred twenty thousand, two hundred twenty-one".