111101222101111 has 36 divisors (see below), whose sum is σ = 123366626746216. Its totient is φ = 99980001000000.

The previous prime is 111101222101109. The next prime is 111101222101153.

111101222101111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111101222101111 - 2¹ = 111101222101109 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 (111101222101411) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11221207261 + ... + 11221217161.

Almost surely, 2^{111101222101111} is an apocalyptic number.

111101222101111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111101222101111 is a deficient number, since it is larger than the sum of its proper divisors (12265404645105).

111101222101111 is an equidigital number, since it uses as much as digits as its factorization.

111101222101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19216 (or 19104 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

It can be divided in two parts, 11110 and 1222101111, that added together give a palindrome (1222112221).

The spelling of 111101222101111 in words is "one hundred eleven trillion, one hundred one billion, two hundred twenty-two million, one hundred one thousand, one hundred eleven".