11001001010101 has 16 divisors (see below), whose sum is σ = 11286152640000. Its totient is φ = 10719390648816.

The previous prime is 11001001010071. The next prime is 11001001010107. The reversal of 11001001010101 is 10101010010011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11001001010101 - 2²⁵ = 11000967455669 is a prime.

It is a Duffinian number.

11001001010101 is a modest number, since divided by 1010101 gives 110010 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001001010107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3992880 + ... + 6159958.

It is an arithmetic number, because the mean of its divisors is an integer number (705384540000).

Almost surely, 2^{11001001010101} is an apocalyptic number.

It is an amenable number.

11001001010101 is a deficient number, since it is larger than the sum of its proper divisors (285151629899).

11001001010101 is a wasteful number, since it uses less digits than its factorization.

11001001010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167896.

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

Adding to 11001001010101 its reverse (10101010010011), we get a palindrome (21102011020112).

The spelling of 11001001010101 in words is "eleven trillion, one billion, one million, ten thousand, one hundred one".