111111021102112 has 12 divisors (see below), whose sum is σ = 218749822794846. Its totient is φ = 55555510551040.

The previous prime is 111111021102079. The next prime is 111111021102113. The reversal of 111111021102112 is 211201120111111.

It can be written as a sum of positive squares in only one way, i.e., 103008777656976 + 8102243445136 = 10149324^2 + 2846444^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (111111021102113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1736109704689 + ... + 1736109704752.

Almost surely, 2^{111111021102112} is an apocalyptic number.

It is an amenable number.

111111021102112 is a deficient number, since it is larger than the sum of its proper divisors (107638801692734).

111111021102112 is an equidigital number, since it uses as much as digits as its factorization.

111111021102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472219409451 (or 3472219409443 counting only the distinct ones).

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

Adding to 111111021102112 its reverse (211201120111111), we get a palindrome (322312141213223).

The spelling of 111111021102112 in words is "one hundred eleven trillion, one hundred eleven billion, twenty-one million, one hundred two thousand, one hundred twelve".