100002101220001 has 4 divisors (see below), whose sum is σ = 105884577762372. Its totient is φ = 94119624677632.

The previous prime is 100002101219989. The next prime is 100002101220031. The reversal of 100002101220001 is 100022101200001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60795080294400 + 39207020925601 = 7797120^2 + 6261551^2 .

It is a cyclic number.

It is not a de Polignac number, because 100002101220001 - 2²⁵ = 100002067665569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100002101220001.

It is not an unprimeable number, because it can be changed into a prime (100002101220031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2941238271160 + ... + 2941238271193.

It is an arithmetic number, because the mean of its divisors is an integer number (26471144440593).

Almost surely, 2^{100002101220001} is an apocalyptic number.

It is an amenable number.

100002101220001 is a deficient number, since it is larger than the sum of its proper divisors (5882476542371).

100002101220001 is an equidigital number, since it uses as much as digits as its factorization.

100002101220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882476542370.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100002101220001 its reverse (100022101200001), we get a palindrome (200024202420002).

The spelling of 100002101220001 in words is "one hundred trillion, two billion, one hundred one million, two hundred twenty thousand, one".