622201081 has 2 divisors, whose sum is σ = 622201082. Its totient is φ = 622201080.

The previous prime is 622201049. The next prime is 622201109. The reversal of 622201081 is 180102226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515698681 + 106502400 = 22709^2 + 10320^2 .

It is a cyclic number.

It is not a de Polignac number, because 622201081 - 2⁵ = 622201049 is a prime.

It is a super-2 number, since 2×622201081² = 774268370395137122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (622201381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311100540 + 311100541.

It is an arithmetic number, because the mean of its divisors is an integer number (311100541).

Almost surely, 2^622201081 is an apocalyptic number.

It is an amenable number.

622201081 is a deficient number, since it is larger than the sum of its proper divisors (1).

622201081 is an equidigital number, since it uses as much as digits as its factorization.

622201081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 622201081 is about 24943.9588076953. The cubic root of 622201081 is about 853.7097742838.

The spelling of 622201081 in words is "six hundred twenty-two million, two hundred one thousand, eighty-one".