21622042364071 has 2 divisors, whose sum is σ = 21622042364072. Its totient is φ = 21622042364070.

The previous prime is 21622042364011. The next prime is 21622042364077. The reversal of 21622042364071 is 17046324022612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21622042364071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21622042364077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10811021182035 + 10811021182036.

It is an arithmetic number, because the mean of its divisors is an integer number (10811021182036).

Almost surely, 2^{21622042364071} is an apocalyptic number.

21622042364071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21622042364071 is an equidigital number, since it uses as much as digits as its factorization.

21622042364071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 40.

Adding to 21622042364071 its reverse (17046324022612), we get a palindrome (38668366386683).

The spelling of 21622042364071 in words is "twenty-one trillion, six hundred twenty-two billion, forty-two million, three hundred sixty-four thousand, seventy-one".