220520818111 has 16 divisors (see below), whose sum is σ = 251093945088. Its totient is φ = 191706592000.

The previous prime is 220520818097. The next prime is 220520818201. The reversal of 220520818111 is 111818025022.

220520818111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220520818111 - 2¹³ = 220520809919 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 (221520818111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861135 + ... + 1087471.

It is an arithmetic number, because the mean of its divisors is an integer number (15693371568).

Almost surely, 2^220520818111 is an apocalyptic number.

220520818111 is a deficient number, since it is larger than the sum of its proper divisors (30573126977).

220520818111 is a wasteful number, since it uses less digits than its factorization.

220520818111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230222.

The product of its (nonzero) digits is 2560, while the sum is 31.

The spelling of 220520818111 in words is "two hundred twenty billion, five hundred twenty million, eight hundred eighteen thousand, one hundred eleven".