100865101 has 2 divisors, whose sum is σ = 100865102. Its totient is φ = 100865100.

The previous prime is 100865099. The next prime is 100865123. The reversal of 100865101 is 101568001.

It is an a-pointer prime, because the next prime (100865123) can be obtained adding 100865101 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92736900 + 8128201 = 9630^2 + 2851^2 .

It is a cyclic number.

It is not a de Polignac number, because 100865101 - 2¹ = 100865099 is a prime.

Together with 100865099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100865801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50432550 + 50432551.

It is an arithmetic number, because the mean of its divisors is an integer number (50432551).

Almost surely, 2^100865101 is an apocalyptic number.

It is an amenable number.

100865101 is a deficient number, since it is larger than the sum of its proper divisors (1).

100865101 is an equidigital number, since it uses as much as digits as its factorization.

100865101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 100865101 is about 10043.1619025086. The cubic root of 100865101 is about 465.4935231149.

The spelling of 100865101 in words is "one hundred million, eight hundred sixty-five thousand, one hundred one".