201110010021001 has 2 divisors, whose sum is σ = 201110010021002. Its totient is φ = 201110010021000.

The previous prime is 201110010020993. The next prime is 201110010021047. The reversal of 201110010021001 is 100120010011102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137131688184976 + 63978321836025 = 11710324^2 + 7998645^2 .

It is a cyclic number.

It is not a de Polignac number, because 201110010021001 - 2³ = 201110010020993 is a prime.

It is a super-2 number, since 2×201110010021001² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201110010021061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555005010500 + 100555005010501.

It is an arithmetic number, because the mean of its divisors is an integer number (100555005010501).

Almost surely, 2^{201110010021001} is an apocalyptic number.

It is an amenable number.

201110010021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110010021001 is an equidigital number, since it uses as much as digits as its factorization.

201110010021001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 201110010021001 its reverse (100120010011102), we get a palindrome (301230020032103).

The spelling of 201110010021001 in words is "two hundred one trillion, one hundred ten billion, ten million, twenty-one thousand, one".