220111122111111 has 96 divisors (see below), whose sum is σ = 411682553737728. Its totient is φ = 114173532426240.

The previous prime is 220111122111091. The next prime is 220111122111157. The reversal of 220111122111111 is 111111221111022.

220111122111111 is a `hidden beast` number, since 220 + 1 + 111 + 221 + 1 + 1 + 111 = 666.

It is not a de Polignac number, because 220111122111111 - 2⁵ = 220111122111079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111122111611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3852735 + ... + 21332271.

It is an arithmetic number, because the mean of its divisors is an integer number (4288359934768).

Almost surely, 2^{220111122111111} is an apocalyptic number.

220111122111111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

220111122111111 is a deficient number, since it is larger than the sum of its proper divisors (191571431626617).

220111122111111 is a wasteful number, since it uses less digits than its factorization.

220111122111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17480243 (or 17480231 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 220111122111111 its reverse (111111221111022), we get a palindrome (331222343222133).

The spelling of 220111122111111 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, one hundred eleven".