100111211100001 has 4 divisors (see below), whose sum is σ = 101102411210004. Its totient is φ = 99120010990000.

The previous prime is 100111211099983. The next prime is 100111211100079. The reversal of 100111211100001 is 100001112111001.

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 84996230035600 + 15114981064401 = 9219340^2 + 3887799^2 .

It is a cyclic number.

It is not a de Polignac number, because 100111211100001 - 2⁹ = 100111211099489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100111211100101) 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, 495600054850 + ... + 495600055051.

It is an arithmetic number, because the mean of its divisors is an integer number (25275602802501).

Almost surely, 2^{100111211100001} is an apocalyptic number.

It is an amenable number.

100111211100001 is a deficient number, since it is larger than the sum of its proper divisors (991200110003).

100111211100001 is an equidigital number, since it uses as much as digits as its factorization.

100111211100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991200110002.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 100111211100001 its reverse (100001112111001), we get a palindrome (200112323211002).

The spelling of 100111211100001 in words is "one hundred trillion, one hundred eleven billion, two hundred eleven million, one hundred thousand, one".