11222221011211 has 16 divisors (see below), whose sum is σ = 13099475828736. Its totient is φ = 9413523779616.

The previous prime is 11222221011191. The next prime is 11222221011217. The reversal of 11222221011211 is 11211012222211.

It is a happy number.

11222221011211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11222221011211 - 2⁷ = 11222221011083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222221011217) 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, 2048310 + ... + 5161396.

It is an arithmetic number, because the mean of its divisors is an integer number (818717239296).

Almost surely, 2^{11222221011211} is an apocalyptic number.

11222221011211 is a deficient number, since it is larger than the sum of its proper divisors (1877254817525).

11222221011211 is a wasteful number, since it uses less digits than its factorization.

11222221011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124098.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11222221011211 its reverse (11211012222211), we get a palindrome (22433233233422).

The spelling of 11222221011211 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, eleven thousand, two hundred eleven".