822127081 has 2 divisors, whose sum is σ = 822127082. Its totient is φ = 822127080.

The previous prime is 822127069. The next prime is 822127091. The reversal of 822127081 is 180721228.

822127081 is nontrivially palindromic in base 12.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414733225 + 407393856 = 20365^2 + 20184^2 .

It is a cyclic number.

It is not a de Polignac number, because 822127081 - 2¹¹ = 822125033 is a prime.

It is a super-2 number, since 2×822127081² = 1351785874627161122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (822127001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411063540 + 411063541.

It is an arithmetic number, because the mean of its divisors is an integer number (411063541).

Almost surely, 2^822127081 is an apocalyptic number.

It is an amenable number.

822127081 is a deficient number, since it is larger than the sum of its proper divisors (1).

822127081 is an equidigital number, since it uses as much as digits as its factorization.

822127081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 822127081 is about 28672.7585174500. The cubic root of 822127081 is about 936.7987834028.

The spelling of 822127081 in words is "eight hundred twenty-two million, one hundred twenty-seven thousand, eighty-one".