11101001011 has 16 divisors (see below), whose sum is σ = 11459664864. Its totient is φ = 10749763584.

The previous prime is 11101000993. The next prime is 11101001029. The reversal of 11101001011 is 11010010111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11101000993) and next prime (11101001029).

It is a cyclic number.

It is not a de Polignac number, because 11101001011 - 2²³ = 11092612403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101000985 and 11101001003.

It is not an unprimeable number, because it can be changed into a prime (11101007011) 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 15 ways as a sum of consecutive naturals, for example, 876355 + ... + 888931.

It is an arithmetic number, because the mean of its divisors is an integer number (716229054).

Almost surely, 2^11101001011 is an apocalyptic number.

11101001011 is a deficient number, since it is larger than the sum of its proper divisors (358663853).

11101001011 is a wasteful number, since it uses less digits than its factorization.

11101001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12870.

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

Adding to 11101001011 its reverse (11010010111), we get a palindrome (22111011122).

It can be divided in two parts, 1110100 and 1011, that added together give a palindrome (1111111).

The spelling of 11101001011 in words is "eleven billion, one hundred one million, one thousand, eleven".