22064335021 has 2 divisors, whose sum is σ = 22064335022. Its totient is φ = 22064335020.

The previous prime is 22064335019. The next prime is 22064335049. The reversal of 22064335021 is 12053346022.

It is an a-pointer prime, because the next prime (22064335049) can be obtained adding 22064335021 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21682562500 + 381772521 = 147250^2 + 19539^2 .

It is a cyclic number.

It is not a de Polignac number, because 22064335021 - 2¹ = 22064335019 is a prime.

Together with 22064335019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22064335001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11032167510 + 11032167511.

It is an arithmetic number, because the mean of its divisors is an integer number (11032167511).

Almost surely, 2^22064335021 is an apocalyptic number.

It is an amenable number.

22064335021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22064335021 is an equidigital number, since it uses as much as digits as its factorization.

22064335021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 22064335021 in words is "twenty-two billion, sixty-four million, three hundred thirty-five thousand, twenty-one".