1084221161 has 2 divisors, whose sum is σ = 1084221162. Its totient is φ = 1084221160.

The previous prime is 1084221113. The next prime is 1084221167. The reversal of 1084221161 is 1611224801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 884705536 + 199515625 = 29744^2 + 14125^2 .

It is a cyclic number.

It is not a de Polignac number, because 1084221161 - 2¹⁸ = 1083959017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1084221161.

It is not a weakly prime, because it can be changed into another prime (1084221167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542110580 + 542110581.

It is an arithmetic number, because the mean of its divisors is an integer number (542110581).

Almost surely, 2^1084221161 is an apocalyptic number.

It is an amenable number.

1084221161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1084221161 is an equidigital number, since it uses as much as digits as its factorization.

1084221161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1084221161 is about 32927.5137385136. The cubic root of 1084221161 is about 1027.3205124922.

Adding to 1084221161 its reverse (1611224801), we get a palindrome (2695445962).

The spelling of 1084221161 in words is "one billion, eighty-four million, two hundred twenty-one thousand, one hundred sixty-one".