990000001111 has 24 divisors (see below), whose sum is σ = 1154457375120. Its totient is φ = 845393767680.

The previous prime is 990000001103. The next prime is 990000001139. The reversal of 990000001111 is 111100000099.

It is not a de Polignac number, because 990000001111 - 2³ = 990000001103 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990000001171) 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 23 ways as a sum of consecutive naturals, for example, 574240 + ... + 1519786.

It is an arithmetic number, because the mean of its divisors is an integer number (48102390630).

Almost surely, 2^990000001111 is an apocalyptic number.

990000001111 is a deficient number, since it is larger than the sum of its proper divisors (164457374009).

990000001111 is a wasteful number, since it uses less digits than its factorization.

990000001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946095 (or 946084 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 22.

The spelling of 990000001111 in words is "nine hundred ninety billion, one thousand, one hundred eleven".