16821119 has 8 divisors (see below), whose sum is σ = 20060160. Its totient is φ = 13791096.

The previous prime is 16821083. The next prime is 16821121. The reversal of 16821119 is 91112861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16821119 is a prime.

It is a super-2 number, since 2×16821119² = 565900088824322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16821091 and 16821100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16821139) 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 in 7 ways as a sum of consecutive naturals, for example, 52079 + ... + 52400.

It is an arithmetic number, because the mean of its divisors is an integer number (2507520).

Almost surely, 2^16821119 is an apocalyptic number.

16821119 is a deficient number, since it is larger than the sum of its proper divisors (3239041).

16821119 is a wasteful number, since it uses less digits than its factorization.

16821119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104509.

The product of its digits is 864, while the sum is 29.

The square root of 16821119 is about 4101.3557514559. The cubic root of 16821119 is about 256.2231077073.

The spelling of 16821119 in words is "sixteen million, eight hundred twenty-one thousand, one hundred nineteen".