1001111110105 has 4 divisors (see below), whose sum is σ = 1201333332132. Its totient is φ = 800888888080.

The previous prime is 1001111110099. The next prime is 1001111110157. The reversal of 1001111110105 is 5010111111001.

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 403353280201 + 597757829904 = 635101^2 + 773148^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1001111110105 is a prime.

It is a super-2 number, since 2×1001111110105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100111111006 + ... + 100111111015.

It is an arithmetic number, because the mean of its divisors is an integer number (300333333033).

Almost surely, 2^{1001111110105} is an apocalyptic number.

It is an amenable number.

1001111110105 is a deficient number, since it is larger than the sum of its proper divisors (200222222027).

1001111110105 is an equidigital number, since it uses as much as digits as its factorization.

1001111110105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200222222026.

The product of its (nonzero) digits is 5, while the sum is 13.

Adding to 1001111110105 its reverse (5010111111001), we get a palindrome (6011222221106).

The spelling of 1001111110105 in words is "one trillion, one billion, one hundred eleven million, one hundred ten thousand, one hundred five".