100111203112005 has 12 divisors (see below), whose sum is σ = 173526085394220. Its totient is φ = 53392641659712.

The previous prime is 100111203111977. The next prime is 100111203112007. The reversal of 100111203112005 is 500211302111001.

It can be written as a sum of positive squares in 2 ways, for example, as 54432434531556 + 45678768580449 = 7377834^2 + 6758607^2 .

It is not a de Polignac number, because 100111203112005 - 2⁸ = 100111203111749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111203112007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1112346701200 + ... + 1112346701289.

It is an arithmetic number, because the mean of its divisors is an integer number (14460507116185).

Almost surely, 2^{100111203112005} is an apocalyptic number.

100111203112005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100111203112005 is a deficient number, since it is larger than the sum of its proper divisors (73414882282215).

100111203112005 is a wasteful number, since it uses less digits than its factorization.

100111203112005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224693402500 (or 2224693402497 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

Adding to 100111203112005 its reverse (500211302111001), we get a palindrome (600322505223006).

The spelling of 100111203112005 in words is "one hundred trillion, one hundred eleven billion, two hundred three million, one hundred twelve thousand, five".