11101001101011 has 24 divisors (see below), whose sum is σ = 16273941452496. Its totient is φ = 7290790087680.

The previous prime is 11101001101007. The next prime is 11101001101051. The reversal of 11101001101011 is 11010110010111.

11101001101011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11101001101011 - 2² = 11101001101007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11101001100984 and 11101001101002.

It is not an unprimeable number, because it can be changed into a prime (11101001101051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20785570 + ... + 21312951.

It is an arithmetic number, because the mean of its divisors is an integer number (678080893854).

Almost surely, 2^{11101001101011} is an apocalyptic number.

11101001101011 is a deficient number, since it is larger than the sum of its proper divisors (5172940351485).

11101001101011 is a wasteful number, since it uses less digits than its factorization.

11101001101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42098963 (or 42098960 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 11101001101011 its reverse (11010110010111), we get a palindrome (22111111111122).

The spelling of 11101001101011 in words is "eleven trillion, one hundred one billion, one million, one hundred one thousand, eleven".