111021100111999 has 8 divisors (see below), whose sum is σ = 138415917022848. Its totient is φ = 86509948139160.

The previous prime is 111021100111993. The next prime is 111021100112033. The reversal of 111021100111999 is 999111001120111.

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

It is not a de Polignac number, because 111021100111999 - 2⁵ = 111021100111967 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 (111021100111993) 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, 720916234417 + ... + 720916234570.

It is an arithmetic number, because the mean of its divisors is an integer number (17301989627856).

Almost surely, 2^{111021100111999} is an apocalyptic number.

111021100111999 is a deficient number, since it is larger than the sum of its proper divisors (27394816910849).

111021100111999 is a wasteful number, since it uses less digits than its factorization.

111021100111999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441832469005.

The product of its (nonzero) digits is 1458, while the sum is 37.

The spelling of 111021100111999 in words is "one hundred eleven trillion, twenty-one billion, one hundred million, one hundred eleven thousand, nine hundred ninety-nine".