811022 has 16 divisors (see below), whose sum is σ = 1277952. Its totient is φ = 385560.

The previous prime is 810989. The next prime is 811037. The reversal of 811022 is 220118.

It is a junction number, because it is equal to n+sod(n) for n = 810988 and 811006.

It is a congruent number.

It is an unprimeable number.

811022 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6323 + ... + 6449.

It is an arithmetic number, because the mean of its divisors is an integer number (79872).

2⁸¹¹⁰²² is an apocalyptic number.

811022 is a deficient number, since it is larger than the sum of its proper divisors (466930).

811022 is a wasteful number, since it uses less digits than its factorization.

811022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 811022 is about 900.5675987953. The cubic root of 811022 is about 93.2561635364.

The spelling of 811022 in words is "eight hundred eleven thousand, twenty-two".