821000119 has 2 divisors, whose sum is σ = 821000120. Its totient is φ = 821000118.

The previous prime is 821000107. The next prime is 821000129. The reversal of 821000119 is 911000128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 821000119 - 2⁵ = 821000087 is a prime.

It is a super-2 number, since 2×821000119² = 1348082390796028322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 821000119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (821000129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410500059 + 410500060.

It is an arithmetic number, because the mean of its divisors is an integer number (410500060).

Almost surely, 2^821000119 is an apocalyptic number.

821000119 is a deficient number, since it is larger than the sum of its proper divisors (1).

821000119 is an equidigital number, since it uses as much as digits as its factorization.

821000119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 821000119 is about 28653.0996403530. The cubic root of 821000119 is about 936.3705367972.

Subtracting 821000119 from its reverse (911000128), we obtain a palindrome (90000009).

The spelling of 821000119 in words is "eight hundred twenty-one million, one hundred nineteen", and thus it is an aban number.