1112004821 has 2 divisors, whose sum is σ = 1112004822. Its totient is φ = 1112004820.

The previous prime is 1112004787. The next prime is 1112004823. The reversal of 1112004821 is 1284002111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869424196 + 242580625 = 29486^2 + 15575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112004821 - 2⁶ = 1112004757 is a prime.

It is a Sophie Germain prime.

Together with 1112004823, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1112004793 and 1112004802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112004823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556002410 + 556002411.

It is an arithmetic number, because the mean of its divisors is an integer number (556002411).

Almost surely, 2^1112004821 is an apocalyptic number.

It is an amenable number.

1112004821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112004821 is an equidigital number, since it uses as much as digits as its factorization.

1112004821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1112004821 is about 33346.7362870791. The cubic root of 1112004821 is about 1036.0217906723.

Adding to 1112004821 its reverse (1284002111), we get a palindrome (2396006932).

The spelling of 1112004821 in words is "one billion, one hundred twelve million, four thousand, eight hundred twenty-one".