821034219 has 16 divisors (see below), whose sum is σ = 1112952960. Its totient is φ = 538310400.

The previous prime is 821034199. The next prime is 821034229. The reversal of 821034219 is 912430128.

It is not a de Polignac number, because 821034219 - 2¹¹ = 821032171 is a prime.

It is a super-2 number, since 2×821034219² = 1348194377537879922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (821034229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35419 + ... + 53819.

It is an arithmetic number, because the mean of its divisors is an integer number (69559560).

Almost surely, 2^821034219 is an apocalyptic number.

821034219 is a deficient number, since it is larger than the sum of its proper divisors (291918741).

821034219 is a wasteful number, since it uses less digits than its factorization.

821034219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18650.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 821034219 is about 28653.6946832341. The cubic root of 821034219 is about 936.3835005766.

It can be divided in two parts, 82 and 1034219, that added together give a palindrome (1034301).

The spelling of 821034219 in words is "eight hundred twenty-one million, thirty-four thousand, two hundred nineteen".