11111001000101 has 4 divisors (see below), whose sum is σ = 11129126614092. Its totient is φ = 11092875386112.

The previous prime is 11111001000083. The next prime is 11111001000133. The reversal of 11111001000101 is 10100010011111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30084902500 + 11080916097601 = 173450^2 + 3328801^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111001000101 - 2⁴² = 6712954488997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111001005101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9062806076 + ... + 9062807301.

It is an arithmetic number, because the mean of its divisors is an integer number (2782281653523).

Almost surely, 2^{11111001000101} is an apocalyptic number.

It is an amenable number.

11111001000101 is a deficient number, since it is larger than the sum of its proper divisors (18125613991).

11111001000101 is an equidigital number, since it uses as much as digits as its factorization.

11111001000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18125613990.

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 11111001000101 its reverse (10100010011111), we get a palindrome (21211011011212).

The spelling of 11111001000101 in words is "eleven trillion, one hundred eleven billion, one million, one hundred one", and thus it is an aban number.