1331222 has 8 divisors (see below), whose sum is σ = 2012472. Its totient is φ = 660400.

The previous prime is 1331207. The next prime is 1331227. The reversal of 1331222 is 2221331.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1331197 and 1331206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2279 + ... + 2802.

It is an arithmetic number, because the mean of its divisors is an integer number (251559).

2^1331222 is an apocalyptic number.

1331222 is a deficient number, since it is larger than the sum of its proper divisors (681250).

1331222 is a wasteful number, since it uses less digits than its factorization.

1331222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214.

The product of its digits is 72, while the sum is 14.

The square root of 1331222 is about 1153.7859420187. The cubic root of 1331222 is about 110.0061153625.

Adding to 1331222 its reverse (2221331), we get a palindrome (3552553).

The spelling of 1331222 in words is "one million, three hundred thirty-one thousand, two hundred twenty-two".