211000819 has 2 divisors, whose sum is σ = 211000820. Its totient is φ = 211000818.

The previous prime is 211000799. The next prime is 211000841. The reversal of 211000819 is 918000112.

It is an a-pointer prime, because the next prime (211000841) can be obtained adding 211000819 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211000819 - 2¹¹ = 210998771 is a prime.

It is a super-2 number, since 2×211000819² = 89042691237341522, which contains 22 as substring.

211000819 is a modest number, since divided by 819 gives 211 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 211000819.

It is not a weakly prime, because it can be changed into another prime (211000519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500409 + 105500410.

It is an arithmetic number, because the mean of its divisors is an integer number (105500410).

Almost surely, 2^211000819 is an apocalyptic number.

211000819 is a deficient number, since it is larger than the sum of its proper divisors (1).

211000819 is an equidigital number, since it uses as much as digits as its factorization.

211000819 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 211000819 is about 14525.8672374492. The cubic root of 211000819 is about 595.3349515794.

The spelling of 211000819 in words is "two hundred eleven million, eight hundred nineteen", and thus it is an aban number.