221202102071 has 2 divisors, whose sum is σ = 221202102072. Its totient is φ = 221202102070.

The previous prime is 221202101999. The next prime is 221202102083. The reversal of 221202102071 is 170201202122.

221202102071 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 a de Polignac number, because none of the positive numbers 2^k-221202102071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221202102571) 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, 110601051035 + 110601051036.

It is an arithmetic number, because the mean of its divisors is an integer number (110601051036).

Almost surely, 2^221202102071 is an apocalyptic number.

221202102071 is a deficient number, since it is larger than the sum of its proper divisors (1).

221202102071 is an equidigital number, since it uses as much as digits as its factorization.

221202102071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 221202102071 its reverse (170201202122), we get a palindrome (391403304193).

The spelling of 221202102071 in words is "two hundred twenty-one billion, two hundred two million, one hundred two thousand, seventy-one".