11043821 has 2 divisors, whose sum is σ = 11043822. Its totient is φ = 11043820.

The previous prime is 11043787. The next prime is 11043833. The reversal of 11043821 is 12834011.

11043821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10329796 + 714025 = 3214^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 11043821 - 2¹⁸ = 10781677 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11043793 and 11043802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11043881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5521910 + 5521911.

It is an arithmetic number, because the mean of its divisors is an integer number (5521911).

Almost surely, 2^11043821 is an apocalyptic number.

It is an amenable number.

11043821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11043821 is an equidigital number, since it uses as much as digits as its factorization.

11043821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 11043821 is about 3323.2244883546. The cubic root of 11043821 is about 222.6929420967.

Adding to 11043821 its reverse (12834011), we get a palindrome (23877832).

The spelling of 11043821 in words is "eleven million, forty-three thousand, eight hundred twenty-one".