111220022111 has 16 divisors (see below), whose sum is σ = 123339787296. Its totient is φ = 99435600000.

The previous prime is 111220022083. The next prime is 111220022117.

111220022111 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-111220022111 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220022117) 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, 6635201 + ... + 6651941.

It is an arithmetic number, because the mean of its divisors is an integer number (7708736706).

Almost surely, 2^111220022111 is an apocalyptic number.

111220022111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111220022111 is a deficient number, since it is larger than the sum of its proper divisors (12119765185).

111220022111 is a wasteful number, since it uses less digits than its factorization.

111220022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26714.

The product of its (nonzero) digits is 16, while the sum is 14.

It can be divided in two parts, 1112200 and 22111, that added together give a palindrome (1134311).

The spelling of 111220022111 in words is "one hundred eleven billion, two hundred twenty million, twenty-two thousand, one hundred eleven".