1106087821 has 2 divisors, whose sum is σ = 1106087822. Its totient is φ = 1106087820.

The previous prime is 1106087819. The next prime is 1106087833. The reversal of 1106087821 is 1287806011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966588100 + 139499721 = 31090^2 + 11811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1106087821 - 2¹ = 1106087819 is a prime.

Together with 1106087819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1106087861) 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, 553043910 + 553043911.

It is an arithmetic number, because the mean of its divisors is an integer number (553043911).

Almost surely, 2^1106087821 is an apocalyptic number.

It is an amenable number.

1106087821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1106087821 is an equidigital number, since it uses as much as digits as its factorization.

1106087821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 1106087821 is about 33257.8986257400. The cubic root of 1106087821 is about 1034.1809575083.

The spelling of 1106087821 in words is "one billion, one hundred six million, eighty-seven thousand, eight hundred twenty-one".