111000999973 has 8 divisors (see below), whose sum is σ = 111150188928. Its totient is φ = 110851881504.

The previous prime is 111000999947. The next prime is 111000999997. The reversal of 111000999973 is 379999000111.

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 111000999973 - 2²¹ = 110998902821 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 (111000993973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3628086 + ... + 3658552.

It is an arithmetic number, because the mean of its divisors is an integer number (13893773616).

Almost surely, 2^111000999973 is an apocalyptic number.

It is an amenable number.

111000999973 is a deficient number, since it is larger than the sum of its proper divisors (149188955).

111000999973 is an equidigital number, since it uses as much as digits as its factorization.

111000999973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35243.

The product of its (nonzero) digits is 137781, while the sum is 49.

The spelling of 111000999973 in words is "one hundred eleven billion, nine hundred ninety-nine thousand, nine hundred seventy-three".