11011222220111 has 4 divisors (see below), whose sum is σ = 11011258518312. Its totient is φ = 11011185921912.

The previous prime is 11011222220101. The next prime is 11011222220137. The reversal of 11011222220111 is 11102222211011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011222220111 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 11011222220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011222220101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17690201 + ... + 18302066.

It is an arithmetic number, because the mean of its divisors is an integer number (2752814629578).

Almost surely, 2^{11011222220111} is an apocalyptic number.

11011222220111 is a deficient number, since it is larger than the sum of its proper divisors (36298201).

11011222220111 is an equidigital number, since it uses as much as digits as its factorization.

11011222220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36298200.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11011222220111 its reverse (11102222211011), we get a palindrome (22113444431122).

It can be divided in two parts, 1101122 and 2220111, that added together give a palindrome (3321233).

The spelling of 11011222220111 in words is "eleven trillion, eleven billion, two hundred twenty-two million, two hundred twenty thousand, one hundred eleven".