111211000999 has 32 divisors (see below), whose sum is σ = 136290180096. Its totient is φ = 88673038080.

The previous prime is 111211000997. The next prime is 111211001023. The reversal of 111211000999 is 999000112111.

It is a cyclic number.

It is not a de Polignac number, because 111211000999 - 2¹ = 111211000997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211000997) 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 31 ways as a sum of consecutive naturals, for example, 2065944 + ... + 2119090.

It is an arithmetic number, because the mean of its divisors is an integer number (4259068128).

Almost surely, 2^111211000999 is an apocalyptic number.

111211000999 is a deficient number, since it is larger than the sum of its proper divisors (25079179097).

111211000999 is a wasteful number, since it uses less digits than its factorization.

111211000999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53535.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 111211000999 in words is "one hundred eleven billion, two hundred eleven million, nine hundred ninety-nine", and thus it is an aban number.