201100100001 has 4 divisors (see below), whose sum is σ = 268133466672. Its totient is φ = 134066733332.

The previous prime is 201100099909. The next prime is 201100100017. The reversal of 201100100001 is 100001001102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201100100001 - 2⁷ = 201100099873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201100100701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33516683331 + ... + 33516683336.

It is an arithmetic number, because the mean of its divisors is an integer number (67033366668).

Almost surely, 2^201100100001 is an apocalyptic number.

It is an amenable number.

201100100001 is a deficient number, since it is larger than the sum of its proper divisors (67033366671).

201100100001 is an equidigital number, since it uses as much as digits as its factorization.

201100100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67033366670.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 201100100001 its reverse (100001001102), we get a palindrome (301101101103).

The spelling of 201100100001 in words is "two hundred one billion, one hundred million, one hundred thousand, one".