21222200120071 has 2 divisors, whose sum is σ = 21222200120072. Its totient is φ = 21222200120070.

The previous prime is 21222200120039. The next prime is 21222200120131. The reversal of 21222200120071 is 17002100222212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21222200120071 - 2⁵ = 21222200120039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222200127071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611100060035 + 10611100060036.

It is an arithmetic number, because the mean of its divisors is an integer number (10611100060036).

Almost surely, 2^{21222200120071} is an apocalyptic number.

21222200120071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222200120071 is an equidigital number, since it uses as much as digits as its factorization.

21222200120071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 21222200120071 its reverse (17002100222212), we get a palindrome (38224300342283).

The spelling of 21222200120071 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred million, one hundred twenty thousand, seventy-one".