221320110301 has 2 divisors, whose sum is σ = 221320110302. Its totient is φ = 221320110300.

The previous prime is 221320110259. The next prime is 221320110313. The reversal of 221320110301 is 103011023122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220402080900 + 918029401 = 469470^2 + 30299^2 .

It is a cyclic number.

It is not a de Polignac number, because 221320110301 - 2²¹ = 221318013149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221320110371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110660055150 + 110660055151.

It is an arithmetic number, because the mean of its divisors is an integer number (110660055151).

Almost surely, 2^221320110301 is an apocalyptic number.

It is an amenable number.

221320110301 is a deficient number, since it is larger than the sum of its proper divisors (1).

221320110301 is an equidigital number, since it uses as much as digits as its factorization.

221320110301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221320110301 its reverse (103011023122), we get a palindrome (324331133423).

The spelling of 221320110301 in words is "two hundred twenty-one billion, three hundred twenty million, one hundred ten thousand, three hundred one".