11100001005 has 12 divisors (see below), whose sum is σ = 19240001820. Its totient is φ = 5920000512.

The previous prime is 11100000983. The next prime is 11100001027. The reversal of 11100001005 is 50010000111.

It is an interprime number because it is at equal distance from previous prime (11100000983) and next prime (11100001027).

It can be written as a sum of positive squares in 2 ways, for example, as 2589384996 + 8510616009 = 50886^2 + 92253^2 .

It is not a de Polignac number, because 11100001005 - 2⁶ = 11100000941 is a prime.

It is a super-2 number, since 2×11100001005² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123333300 + ... + 123333389.

It is an arithmetic number, because the mean of its divisors is an integer number (1603333485).

Almost surely, 2^11100001005 is an apocalyptic number.

11100001005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11100001005 is a deficient number, since it is larger than the sum of its proper divisors (8140000815).

11100001005 is a wasteful number, since it uses less digits than its factorization.

11100001005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246666700 (or 246666697 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 9.

Adding to 11100001005 its reverse (50010000111), we get a palindrome (61110001116).

The spelling of 11100001005 in words is "eleven billion, one hundred million, one thousand, five".