221120101201 has 2 divisors, whose sum is σ = 221120101202. Its totient is φ = 221120101200.

The previous prime is 221120101199. The next prime is 221120101207. The reversal of 221120101201 is 102101021122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172764091201 + 48356010000 = 415649^2 + 219900^2 .

It is a cyclic number.

It is not a de Polignac number, because 221120101201 - 2¹ = 221120101199 is a prime.

Together with 221120101199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (221120101207) 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, 110560050600 + 110560050601.

It is an arithmetic number, because the mean of its divisors is an integer number (110560050601).

Almost surely, 2^221120101201 is an apocalyptic number.

It is an amenable number.

221120101201 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120101201 is an equidigital number, since it uses as much as digits as its factorization.

221120101201 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 221120101201 its reverse (102101021122), we get a palindrome (323221122323).

The spelling of 221120101201 in words is "two hundred twenty-one billion, one hundred twenty million, one hundred one thousand, two hundred one".