100001203165 has 8 divisors (see below), whose sum is σ = 120013984728. Its totient is φ = 79992601920.

The previous prime is 100001203163. The next prime is 100001203229. The reversal of 100001203165 is 561302100001.

It can be written as a sum of positive squares in 4 ways, for example, as 68524056441 + 31477146724 = 261771^2 + 177418^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100001203165 - 2¹ = 100001203163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001203163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992206 + ... + 1088335.

It is an arithmetic number, because the mean of its divisors is an integer number (15001748091).

Almost surely, 2^100001203165 is an apocalyptic number.

It is an amenable number.

100001203165 is a deficient number, since it is larger than the sum of its proper divisors (20012781563).

100001203165 is an equidigital number, since it uses as much as digits as its factorization.

100001203165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090159.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 100001203165 its reverse (561302100001), we get a palindrome (661303303166).

The spelling of 100001203165 in words is "one hundred billion, one million, two hundred three thousand, one hundred sixty-five".