1200222 has 24 divisors (see below), whose sum is σ = 2625480. Its totient is φ = 396240.

The previous prime is 1200191. The next prime is 1200233. The reversal of 1200222 is 2220021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2104 + ... + 2612.

It is an arithmetic number, because the mean of its divisors is an integer number (109395).

2^1200222 is an apocalyptic number.

1200222 is an abundant number, since it is smaller than the sum of its proper divisors (1425258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200222 is a wasteful number, since it uses less digits than its factorization.

1200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1200222 is about 1095.5464389975. The cubic root of 1200222 is about 106.2724095754.

Adding to 1200222 its reverse (2220021), we get a palindrome (3420243).

The spelling of 1200222 in words is "one million, two hundred thousand, two hundred twenty-two".