11821499 has 2 divisors, whose sum is σ = 11821500. Its totient is φ = 11821498.

The previous prime is 11821483. The next prime is 11821501. The reversal of 11821499 is 99412811.

11821499 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (99412811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11821499 - 2⁴ = 11821483 is a prime.

Together with 11821501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11821399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5910749 + 5910750.

It is an arithmetic number, because the mean of its divisors is an integer number (5910750).

Almost surely, 2^11821499 is an apocalyptic number.

11821499 is a deficient number, since it is larger than the sum of its proper divisors (1).

11821499 is an equidigital number, since it uses as much as digits as its factorization.

11821499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 35.

The square root of 11821499 is about 3438.2406838382. The cubic root of 11821499 is about 227.8019915740.

The spelling of 11821499 in words is "eleven million, eight hundred twenty-one thousand, four hundred ninety-nine".