111002111111 has 4 divisors (see below), whose sum is σ = 111402841032. Its totient is φ = 110601381192.

The previous prime is 111002111093. The next prime is 111002111113. The reversal of 111002111111 is 111111200111.

It is a happy number.

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 111002111111 - 2¹⁴ = 111002094727 is a prime.

It is a Duffinian number.

111002111111 is a modest number, since divided by 111111 gives 111002 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 111002111092 and 111002111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002111113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200364545 + ... + 200365098.

It is an arithmetic number, because the mean of its divisors is an integer number (27850710258).

Almost surely, 2^111002111111 is an apocalyptic number.

111002111111 is a deficient number, since it is larger than the sum of its proper divisors (400729921).

111002111111 is an equidigital number, since it uses as much as digits as its factorization.

111002111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400729920.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111002111111 its reverse (111111200111), we get a palindrome (222113311222).

The spelling of 111002111111 in words is "one hundred eleven billion, two million, one hundred eleven thousand, one hundred eleven".