11011001011 has 8 divisors (see below), whose sum is σ = 11964416000. Its totient is φ = 10094974920.

The previous prime is 11011000969. The next prime is 11011001059. The reversal of 11011001011 is 11010011011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11011001011 - 2⁷ = 11011000883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011000985 and 11011001003.

It is not an unprimeable number, because it can be changed into a prime (11011001311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9346611 + ... + 9347788.

It is an arithmetic number, because the mean of its divisors is an integer number (1495552000).

Almost surely, 2^11011001011 is an apocalyptic number.

11011001011 is a deficient number, since it is larger than the sum of its proper divisors (953414989).

11011001011 is a wasteful number, since it uses less digits than its factorization.

11011001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18694449.

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

Adding to 11011001011 its reverse (11010011011), we get a palindrome (22021012022).

The spelling of 11011001011 in words is "eleven billion, eleven million, one thousand, eleven".