100001020995 has 12 divisors (see below), whose sum is σ = 173335103136. Its totient is φ = 53333877840.

The previous prime is 100001020969. The next prime is 100001021023. The reversal of 100001020995 is 599020100001.

It is a happy number.

It is not a de Polignac number, because 100001020995 - 2¹⁶ = 100000955459 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1111122411 + ... + 1111122500.

It is an arithmetic number, because the mean of its divisors is an integer number (14444591928).

Almost surely, 2^100001020995 is an apocalyptic number.

100001020995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100001020995 is a deficient number, since it is larger than the sum of its proper divisors (73334082141).

100001020995 is a wasteful number, since it uses less digits than its factorization.

100001020995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222244922 (or 2222244919 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

Adding to 100001020995 its reverse (599020100001), we get a palindrome (699021120996).

The spelling of 100001020995 in words is "one hundred billion, one million, twenty thousand, nine hundred ninety-five".