100512005 has 16 divisors (see below), whose sum is σ = 131830848. Its totient is φ = 72960000.

The previous prime is 100511981. The next prime is 100512011. The reversal of 100512005 is 500215001.

It is not a de Polignac number, because 100512005 - 2¹² = 100507909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33830 + ... + 36680.

It is an arithmetic number, because the mean of its divisors is an integer number (8239428).

Almost surely, 2^100512005 is an apocalyptic number.

It is an amenable number.

100512005 is a deficient number, since it is larger than the sum of its proper divisors (31318843).

100512005 is a wasteful number, since it uses less digits than its factorization.

100512005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 100512005 is about 10025.5675649810. The cubic root of 100512005 is about 464.9497074370.

Adding to 100512005 its reverse (500215001), we get a palindrome (600727006).

The spelling of 100512005 in words is "one hundred million, five hundred twelve thousand, five".