111111111100011 has 32 divisors (see below), whose sum is σ = 166061264260608. Its totient is φ = 65489631978240.

The previous prime is 111111111099913. The next prime is 111111111100021. The reversal of 111111111100011 is 110001111111111.

It is not a de Polignac number, because 111111111100011 - 2¹¹ = 111111111097963 is a prime.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 111111111100011.

It is not an unprimeable number, because it can be changed into a prime (111111111100021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18504511 + ... + 23762136.

It is an arithmetic number, because the mean of its divisors is an integer number (5189414508144).

Almost surely, 2^{111111111100011} is an apocalyptic number.

111111111100011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111111111100011 is a deficient number, since it is larger than the sum of its proper divisors (54950153160597).

111111111100011 is a wasteful number, since it uses less digits than its factorization.

111111111100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42268851.

The product of its (nonzero) digits is 1, while the sum is 12.

Adding to 111111111100011 its reverse (110001111111111), we get a palindrome (221112222211122).

It can be divided in two parts, 11111111 and 1100011, that multiplied together give a palindrome (12222344322221).

The spelling of 111111111100011 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred thousand, eleven".