2822065721 has 2 divisors, whose sum is σ = 2822065722. Its totient is φ = 2822065720.

The previous prime is 2822065703. The next prime is 2822065723. The reversal of 2822065721 is 1275602282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1510177321 + 1311888400 = 38861^2 + 36220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2822065721 - 2⁶ = 2822065657 is a prime.

Together with 2822065723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2822065723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1411032860 + 1411032861.

It is an arithmetic number, because the mean of its divisors is an integer number (1411032861).

Almost surely, 2^2822065721 is an apocalyptic number.

It is an amenable number.

2822065721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2822065721 is an equidigital number, since it uses as much as digits as its factorization.

2822065721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 2822065721 is about 53123.1185172708. The cubic root of 2822065721 is about 1413.1525325648.

The spelling of 2822065721 in words is "two billion, eight hundred twenty-two million, sixty-five thousand, seven hundred twenty-one".