1011011001001 has 8 divisors (see below), whose sum is σ = 1073969154720. Its totient is φ = 948440282688.

The previous prime is 1011011000983. The next prime is 1011011001047. The reversal of 1011011001001 is 1001001101101.

It is a happy number.

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

It is not a de Polignac number, because 1011011001001 - 2⁵ = 1011011000969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011011001101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96853471 + ... + 96863908.

It is an arithmetic number, because the mean of its divisors is an integer number (134246144340).

Almost surely, 2^{1011011001001} is an apocalyptic number.

It is an amenable number.

1011011001001 is a deficient number, since it is larger than the sum of its proper divisors (62958153719).

1011011001001 is a wasteful number, since it uses less digits than its factorization.

1011011001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193717703.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 1011011001001 its reverse (1001001101101), we get a palindrome (2012012102102).

It can be divided in two parts, 101101 and 1001001, that multiplied together give a palindrome (101202202101).

The spelling of 1011011001001 in words is "one trillion, eleven billion, eleven million, one thousand, one".