201110221001 has 2 divisors, whose sum is σ = 201110221002. Its totient is φ = 201110221000.

The previous prime is 201110220979. The next prime is 201110221021. The reversal of 201110221001 is 100122011102.

201110221001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197740302400 + 3369918601 = 444680^2 + 58051^2 .

It is a cyclic number.

It is not a de Polignac number, because 201110221001 - 2²² = 201106026697 is a prime.

It is a super-2 number, since 2×201110221001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201110221021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555110500 + 100555110501.

It is an arithmetic number, because the mean of its divisors is an integer number (100555110501).

Almost surely, 2^201110221001 is an apocalyptic number.

It is an amenable number.

201110221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110221001 is an equidigital number, since it uses as much as digits as its factorization.

201110221001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201110221001 its reverse (100122011102), we get a palindrome (301232232103).

The spelling of 201110221001 in words is "two hundred one billion, one hundred ten million, two hundred twenty-one thousand, one".