1001089208911 has 16 divisors (see below), whose sum is σ = 1115138390688. Its totient is φ = 891062208000.

The previous prime is 1001089208909. The next prime is 1001089208947. The reversal of 1001089208911 is 1198029801001.

It is a cyclic number.

It is not a de Polignac number, because 1001089208911 - 2¹ = 1001089208909 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 (1001089208981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4439940 + ... + 4659961.

It is an arithmetic number, because the mean of its divisors is an integer number (69696149418).

Almost surely, 2^{1001089208911} is an apocalyptic number.

1001089208911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001089208911 is a deficient number, since it is larger than the sum of its proper divisors (114049181777).

1001089208911 is a wasteful number, since it uses less digits than its factorization.

1001089208911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9100122.

The product of its (nonzero) digits is 10368, while the sum is 40.

It can be divided in two parts, 1001089 and 208911, that added together give a square (1210000 = 1100²).

The spelling of 1001089208911 in words is "one trillion, one billion, eighty-nine million, two hundred eight thousand, nine hundred eleven".