21022022071 has 2 divisors, whose sum is σ = 21022022072. Its totient is φ = 21022022070.

The previous prime is 21022022053. The next prime is 21022022101. The reversal of 21022022071 is 17022022012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21022022071 - 2²³ = 21013633463 is a prime.

It is a super-2 number, since 2×21022022071² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022022771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511011035 + 10511011036.

It is an arithmetic number, because the mean of its divisors is an integer number (10511011036).

Almost surely, 2^21022022071 is an apocalyptic number.

21022022071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022022071 is an equidigital number, since it uses as much as digits as its factorization.

21022022071 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 19.

Adding to 21022022071 its reverse (17022022012), we get a palindrome (38044044083).

The spelling of 21022022071 in words is "twenty-one billion, twenty-two million, twenty-two thousand, seventy-one".