201100001010001 has 2 divisors, whose sum is σ = 201100001010002. Its totient is φ = 201100001010000.

The previous prime is 201100001009993. The next prime is 201100001010017. The reversal of 201100001010001 is 100010100001102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176011272421776 + 25088728588225 = 13266924^2 + 5008865^2 .

It is a cyclic number.

It is not a de Polignac number, because 201100001010001 - 2³ = 201100001009993 is a prime.

It is not a weakly prime, because it can be changed into another prime (201100001010061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550000505000 + 100550000505001.

It is an arithmetic number, because the mean of its divisors is an integer number (100550000505001).

Almost surely, 2^{201100001010001} is an apocalyptic number.

It is an amenable number.

201100001010001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201100001010001 is an equidigital number, since it uses as much as digits as its factorization.

201100001010001 is an odious number, because the sum of its binary digits is odd.

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

Adding to 201100001010001 its reverse (100010100001102), we get a palindrome (301110101011103).

The spelling of 201100001010001 in words is "two hundred one trillion, one hundred billion, one million, ten thousand, one".