1220822 has 8 divisors (see below), whose sum is σ = 1835976. Its totient is φ = 608832.

The previous prime is 1220819. The next prime is 1220833. The reversal of 1220822 is 2280221.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1220822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (229497).

2^1220822 is an apocalyptic number.

1220822 is a deficient number, since it is larger than the sum of its proper divisors (615154).

1220822 is an equidigital number, since it uses as much as digits as its factorization.

1220822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1220822 is about 1104.9081409782. The cubic root of 1220822 is about 106.8769657539.

The spelling of 1220822 in words is "one million, two hundred twenty thousand, eight hundred twenty-two".