111011999999 has 4 divisors (see below), whose sum is σ = 117542117664. Its totient is φ = 104481882336.

The previous prime is 111011999993. The next prime is 111012000007. The reversal of 111011999999 is 999999110111.

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 111011999999 - 2⁸ = 111011999743 is a prime.

It is a Duffinian number.

111011999999 is a modest number, since divided by 999999 gives 111011 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011999993) 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, 3265058807 + ... + 3265058840.

It is an arithmetic number, because the mean of its divisors is an integer number (29385529416).

Almost surely, 2^111011999999 is an apocalyptic number.

111011999999 is a deficient number, since it is larger than the sum of its proper divisors (6530117665).

111011999999 is an equidigital number, since it uses as much as digits as its factorization.

111011999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6530117664.

The product of its (nonzero) digits is 531441, while the sum is 59.

The spelling of 111011999999 in words is "one hundred eleven billion, eleven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".