111000221999 has 4 divisors (see below), whose sum is σ = 112099234200. Its totient is φ = 109901209800.

The previous prime is 111000221933. The next prime is 111000222001. The reversal of 111000221999 is 999122000111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999122000111 = 41 ⋅24368829271.

It is a cyclic number.

It is not a de Polignac number, because 111000221999 - 2²⁰ = 110999173423 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 (111000221599) 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, 549505949 + ... + 549506150.

It is an arithmetic number, because the mean of its divisors is an integer number (28024808550).

Almost surely, 2^111000221999 is an apocalyptic number.

111000221999 is a deficient number, since it is larger than the sum of its proper divisors (1099012201).

111000221999 is a wasteful number, since it uses less digits than its factorization.

111000221999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099012200.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 111000221999 in words is "one hundred eleven billion, two hundred twenty-one thousand, nine hundred ninety-nine".