1085328121 has 2 divisors, whose sum is σ = 1085328122. Its totient is φ = 1085328120.

The previous prime is 1085328119. The next prime is 1085328137. The reversal of 1085328121 is 1218235801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1080765625 + 4562496 = 32875^2 + 2136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085328121 - 2¹ = 1085328119 is a prime.

Together with 1085328119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1085328191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542664060 + 542664061.

It is an arithmetic number, because the mean of its divisors is an integer number (542664061).

Almost surely, 2^1085328121 is an apocalyptic number.

It is an amenable number.

1085328121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085328121 is an equidigital number, since it uses as much as digits as its factorization.

1085328121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 1085328121 is about 32944.3184934823. The cubic root of 1085328121 is about 1027.6700155756.

The spelling of 1085328121 in words is "one billion, eighty-five million, three hundred twenty-eight thousand, one hundred twenty-one".