1256222 has 24 divisors (see below), whose sum is σ = 2154600. Its totient is φ = 548240.

The previous prime is 1256209. The next prime is 1256231. The reversal of 1256222 is 2226521.

It is a junction number, because it is equal to n+sod(n) for n = 1256194 and 1256203.

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 in 11 ways as a sum of consecutive naturals, for example, 6929 + ... + 7107.

It is an arithmetic number, because the mean of its divisors is an integer number (89775).

2^1256222 is an apocalyptic number.

1256222 is a deficient number, since it is larger than the sum of its proper divisors (898378).

1256222 is a wasteful number, since it uses less digits than its factorization.

1256222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 221 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 1256222 is about 1120.8130977108. The cubic root of 1256222 is about 107.9001706689.

Subtracting 1256222 from its reverse (2226521), we obtain a cube (970299 = 99³).

The spelling of 1256222 in words is "one million, two hundred fifty-six thousand, two hundred twenty-two".