21032210071 has 2 divisors, whose sum is σ = 21032210072. Its totient is φ = 21032210070.

The previous prime is 21032210047. The next prime is 21032210141. The reversal of 21032210071 is 17001223012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21032210071 - 2¹⁷ = 21032078999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21032210971) 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, 10516105035 + 10516105036.

It is an arithmetic number, because the mean of its divisors is an integer number (10516105036).

Almost surely, 2^21032210071 is an apocalyptic number.

21032210071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032210071 is an equidigital number, since it uses as much as digits as its factorization.

21032210071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 21032210071 its reverse (17001223012), we get a palindrome (38033433083).

The spelling of 21032210071 in words is "twenty-one billion, thirty-two million, two hundred ten thousand, seventy-one".