220111120012111 has 4 divisors (see below), whose sum is σ = 220685822675712. Its totient is φ = 219536417348512.

The previous prime is 220111120012009. The next prime is 220111120012141. The reversal of 220111120012111 is 111210021111022.

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

It is a cyclic number.

It is not a de Polignac number, because 220111120012111 - 2¹⁵ = 220111119979343 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 (220111120012141) 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 3 ways as a sum of consecutive naturals, for example, 287351331226 + ... + 287351331991.

It is an arithmetic number, because the mean of its divisors is an integer number (55171455668928).

Almost surely, 2^{220111120012111} is an apocalyptic number.

220111120012111 is a deficient number, since it is larger than the sum of its proper divisors (574702663601).

220111120012111 is an equidigital number, since it uses as much as digits as its factorization.

220111120012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574702663600.

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

Adding to 220111120012111 its reverse (111210021111022), we get a palindrome (331321141123133).

The spelling of 220111120012111 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred twenty million, twelve thousand, one hundred eleven".