221232301001 has 2 divisors, whose sum is σ = 221232301002. Its totient is φ = 221232301000.

The previous prime is 221232300977. The next prime is 221232301033. The reversal of 221232301001 is 100103232122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185416360000 + 35815941001 = 430600^2 + 189251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221232301001 is a prime.

It is not a weakly prime, because it can be changed into another prime (221232301051) 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, 110616150500 + 110616150501.

It is an arithmetic number, because the mean of its divisors is an integer number (110616150501).

Almost surely, 2^221232301001 is an apocalyptic number.

It is an amenable number.

221232301001 is a deficient number, since it is larger than the sum of its proper divisors (1).

221232301001 is an equidigital number, since it uses as much as digits as its factorization.

221232301001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221232301001 its reverse (100103232122), we get a palindrome (321335533123).

The spelling of 221232301001 in words is "two hundred twenty-one billion, two hundred thirty-two million, three hundred one thousand, one".