1222775 has 12 divisors (see below), whose sum is σ = 1543800. Its totient is φ = 960480.

The previous prime is 1222769. The next prime is 1222777. The reversal of 1222775 is 5772221.

It is not a de Polignac number, because 1222775 - 2¹⁰ = 1221751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222777) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 1061 + ... + 1889.

It is an arithmetic number, because the mean of its divisors is an integer number (128650).

2^1222775 is an apocalyptic number.

1222775 is a deficient number, since it is larger than the sum of its proper divisors (321025).

1222775 is an equidigital number, since it uses as much as digits as its factorization.

1222775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898 (or 893 counting only the distinct ones).

The product of its digits is 1960, while the sum is 26.

The square root of 1222775 is about 1105.7915716807. The cubic root of 1222775 is about 106.9339272405.

Adding to 1222775 its reverse (5772221), we get a palindrome (6994996).

The spelling of 1222775 in words is "one million, two hundred twenty-two thousand, seven hundred seventy-five".