11821411 has 4 divisors (see below), whose sum is σ = 13510192. Its totient is φ = 10132632.

The previous prime is 11821399. The next prime is 11821427. The reversal of 11821411 is 11412811.

11821411 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11821411 - 2⁷ = 11821283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11821451) 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, 844380 + ... + 844393.

It is an arithmetic number, because the mean of its divisors is an integer number (3377548).

Almost surely, 2^11821411 is an apocalyptic number.

11821411 is a deficient number, since it is larger than the sum of its proper divisors (1688781).

11821411 is an equidigital number, since it uses as much as digits as its factorization.

11821411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688780.

The product of its digits is 64, while the sum is 19.

The square root of 11821411 is about 3438.2278865718. The cubic root of 11821411 is about 227.8014263150.

The spelling of 11821411 in words is "eleven million, eight hundred twenty-one thousand, four hundred eleven".