100001021100001 has 8 divisors (see below), whose sum is σ = 115354982952000. Its totient is φ = 84914084671728.

The previous prime is 100001021099983. The next prime is 100001021100041. The reversal of 100001021100001 is 100001120100001.

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

It is a cyclic number.

It is not a de Polignac number, because 100001021100001 - 2²¹ = 100001019002849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100001021100041) 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, 66756355126 + ... + 66756356623.

It is an arithmetic number, because the mean of its divisors is an integer number (14419372869000).

Almost surely, 2^{100001021100001} is an apocalyptic number.

It is an amenable number.

100001021100001 is a deficient number, since it is larger than the sum of its proper divisors (15353961851999).

100001021100001 is a wasteful number, since it uses less digits than its factorization.

100001021100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133512711863.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 100001021100001 its reverse (100001120100001), we get a palindrome (200002141200002).

The spelling of 100001021100001 in words is "one hundred trillion, one billion, twenty-one million, one hundred thousand, one".