1085826121 has 4 divisors (see below), whose sum is σ = 1086167700. Its totient is φ = 1085484544.

The previous prime is 1085826089. The next prime is 1085826127. The reversal of 1085826121 is 1216285801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 824551225 + 261274896 = 28715^2 + 16164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085826121 - 2⁵ = 1085826089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085826127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165976 + ... + 172393.

It is an arithmetic number, because the mean of its divisors is an integer number (271541925).

Almost surely, 2^1085826121 is an apocalyptic number.

It is an amenable number.

1085826121 is a deficient number, since it is larger than the sum of its proper divisors (341579).

1085826121 is an equidigital number, since it uses as much as digits as its factorization.

1085826121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341578.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 1085826121 is about 32951.8758343133. The cubic root of 1085826121 is about 1027.8271727835.

The spelling of 1085826121 in words is "one billion, eighty-five million, eight hundred twenty-six thousand, one hundred twenty-one".