100121065 has 16 divisors (see below), whose sum is σ = 131265216. Its totient is φ = 72705600.

The previous prime is 100121039. The next prime is 100121111. The reversal of 100121065 is 560121001.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-100121065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60955 + ... + 62575.

It is an arithmetic number, because the mean of its divisors is an integer number (8204076).

Almost surely, 2^100121065 is an apocalyptic number.

It is an amenable number.

100121065 is a deficient number, since it is larger than the sum of its proper divisors (31144151).

100121065 is a wasteful number, since it uses less digits than its factorization.

100121065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 100121065 is about 10006.0514190164. The cubic root of 100121065 is about 464.3461191400.

Adding to 100121065 its reverse (560121001), we get a palindrome (660242066).

The spelling of 100121065 in words is "one hundred million, one hundred twenty-one thousand, sixty-five".