911111111100101 has 4 divisors (see below), whose sum is σ = 914891655129804. Its totient is φ = 907330567070400.

The previous prime is 911111111100083. The next prime is 911111111100121. The reversal of 911111111100101 is 101001111111119.

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 792640621207876 + 118470489892225 = 28153874^2 + 10884415^2 .

It is a cyclic number.

It is not a de Polignac number, because 911111111100101 - 2³⁸ = 910836233193157 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 (911111111100121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890272014490 + ... + 1890272014971.

It is an arithmetic number, because the mean of its divisors is an integer number (228722913782451).

Almost surely, 2^{911111111100101} is an apocalyptic number.

It is an amenable number.

911111111100101 is a deficient number, since it is larger than the sum of its proper divisors (3780544029703).

911111111100101 is a wasteful number, since it uses less digits than its factorization.

911111111100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780544029702.

The product of its (nonzero) digits is 9, while the sum is 20.

The spelling of 911111111100101 in words is "nine hundred eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred thousand, one hundred one".