111020099999 has 4 divisors (see below), whose sum is σ = 111136596336. Its totient is φ = 110903603664.

The previous prime is 111020099947. The next prime is 111020100031. The reversal of 111020099999 is 999990020111.

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 111020099999 - 2¹² = 111020095903 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 (111020099929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58246739 + ... + 58248644.

It is an arithmetic number, because the mean of its divisors is an integer number (27784149084).

Almost surely, 2^111020099999 is an apocalyptic number.

111020099999 is a deficient number, since it is larger than the sum of its proper divisors (116496337).

111020099999 is an equidigital number, since it uses as much as digits as its factorization.

111020099999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116496336.

The product of its (nonzero) digits is 118098, while the sum is 50.

The spelling of 111020099999 in words is "one hundred eleven billion, twenty million, ninety-nine thousand, nine hundred ninety-nine".