11021221201 has 2 divisors, whose sum is σ = 11021221202. Its totient is φ = 11021221200.

The previous prime is 11021221199. The next prime is 11021221207. The reversal of 11021221201 is 10212212011.

11021221201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9565035601 + 1456185600 = 97801^2 + 38160^2 .

It is an emirp because it is prime and its reverse (10212212011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11021221201 - 2¹ = 11021221199 is a prime.

It is a super-2 number, since 2×11021221201² (a number of 21 digits) contains 22 as substring.

Together with 11021221199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11021221207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510610600 + 5510610601.

It is an arithmetic number, because the mean of its divisors is an integer number (5510610601).

Almost surely, 2^11021221201 is an apocalyptic number.

It is an amenable number.

11021221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021221201 is an equidigital number, since it uses as much as digits as its factorization.

11021221201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11021221201 its reverse (10212212011), we get a palindrome (21233433212).

The spelling of 11021221201 in words is "eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred one".