1000222 has 4 divisors (see below), whose sum is σ = 1500336. Its totient is φ = 500110.

The previous prime is 1000213. The next prime is 1000231. The reversal of 1000222 is 2220001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1000213) and next prime (1000231).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250054 + ... + 250057.

It is an arithmetic number, because the mean of its divisors is an integer number (375084).

2^1000222 is an apocalyptic number.

1000222 is a deficient number, since it is larger than the sum of its proper divisors (500114).

1000222 is an equidigital number, since it uses as much as digits as its factorization.

1000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500113.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 1000222 is about 1000.1109938402. The cubic root of 1000222 is about 100.0073994525.

Adding to 1000222 its reverse (2220001), we get a palindrome (3220223).

The spelling of 1000222 in words is "one million, two hundred twenty-two", and thus it is an aban number.