1181222 has 16 divisors (see below), whose sum is σ = 2042880. Its totient is φ = 501768.

The previous prime is 1181209. The next prime is 1181237. The reversal of 1181222 is 2221811.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1181222.

It is a congruent number.

It is an unprimeable 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, 1643 + ... + 2249.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

2^1181222 is an apocalyptic number.

1181222 is a deficient number, since it is larger than the sum of its proper divisors (861658).

1181222 is a wasteful number, since it uses less digits than its factorization.

1181222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755.

The product of its digits is 64, while the sum is 17.

The square root of 1181222 is about 1086.8403746641. The cubic root of 1181222 is about 105.7086457390.

The spelling of 1181222 in words is "one million, one hundred eighty-one thousand, two hundred twenty-two".