221320110371 has 2 divisors, whose sum is σ = 221320110372. Its totient is φ = 221320110370.

The previous prime is 221320110337. The next prime is 221320110383. The reversal of 221320110371 is 173011023122.

221320110371 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 is a cyclic number.

It is not a de Polignac number, because 221320110371 - 2³⁴ = 204140241187 is a prime.

It is not a weakly prime, because it can be changed into another prime (221320110301) 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, 110660055185 + 110660055186.

It is an arithmetic number, because the mean of its divisors is an integer number (110660055186).

Almost surely, 2^221320110371 is an apocalyptic number.

221320110371 is a deficient number, since it is larger than the sum of its proper divisors (1).

221320110371 is an equidigital number, since it uses as much as digits as its factorization.

221320110371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 221320110371 its reverse (173011023122), we get a palindrome (394331133493).

The spelling of 221320110371 in words is "two hundred twenty-one billion, three hundred twenty million, one hundred ten thousand, three hundred seventy-one".