11222122222111 has 16 divisors (see below), whose sum is σ = 11352242959200. Its totient is φ = 11092379760000.

The previous prime is 11222122222093. The next prime is 11222122222151. The reversal of 11222122222111 is 11122222122211.

It is a cyclic number.

It is not a de Polignac number, because 11222122222111 - 2¹⁹ = 11222121697823 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 (11222122222151) 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, 658992145 + ... + 659009173.

It is an arithmetic number, because the mean of its divisors is an integer number (709515184950).

Almost surely, 2^{11222122222111} is an apocalyptic number.

11222122222111 is a deficient number, since it is larger than the sum of its proper divisors (130120737089).

11222122222111 is a wasteful number, since it uses less digits than its factorization.

11222122222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27690.

The product of its digits is 256, while the sum is 22.

Adding to 11222122222111 its reverse (11122222122211), we get a palindrome (22344344344322).

The spelling of 11222122222111 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".