201020001101 has 2 divisors, whose sum is σ = 201020001102. Its totient is φ = 201020001100.

The previous prime is 201020001071. The next prime is 201020001139. The reversal of 201020001101 is 101100020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197959145476 + 3060855625 = 444926^2 + 55325^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020001101 - 2¹⁴ = 201019984717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201020001151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510000550 + 100510000551.

It is an arithmetic number, because the mean of its divisors is an integer number (100510000551).

Almost surely, 2^201020001101 is an apocalyptic number.

It is an amenable number.

201020001101 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020001101 is an equidigital number, since it uses as much as digits as its factorization.

201020001101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 201020001101 its reverse (101100020102), we get a palindrome (302120021203).

It can be divided in two parts, 201020001 and 101, that added together give a palindrome (201020102).

The spelling of 201020001101 in words is "two hundred one billion, twenty million, one thousand, one hundred one".