Adding to 101101001010101 its reverse (101010100101101), we get a palindrome (202111101111202).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-101101001010101 is a prime.
It is a Duffinian number.
It is a congruent number.
Almost surely, 2101101001010101 is an apocalyptic number.
It is an amenable number.
101101001010101 is a wasteful number, since it uses less digits than its factorization.
101101001010101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1001000010102.
The spelling of 101101001010101 in words is "one hundred one trillion, one hundred one billion, one million, ten thousand, one hundred one".