111020009999 has 8 divisors (see below), whose sum is σ = 116984039040. Its totient is φ = 105068068056.

The previous prime is 111020009987. The next prime is 111020010041. The reversal of 111020009999 is 999900020111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111020009999 - 2⁴ = 111020009983 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 (111020009099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3002909 + ... + 3039654.

It is an arithmetic number, because the mean of its divisors is an integer number (14623004880).

Almost surely, 2^111020009999 is an apocalyptic number.

111020009999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

111020009999 is a deficient number, since it is larger than the sum of its proper divisors (5964029041).

111020009999 is an equidigital number, since it uses as much as digits as its factorization.

111020009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043549.

The product of its (nonzero) digits is 13122, while the sum is 41.

The spelling of 111020009999 in words is "one hundred eleven billion, twenty million, nine thousand, nine hundred ninety-nine".