1222288 has 20 divisors (see below), whose sum is σ = 2400640. Its totient is φ = 602784.

The previous prime is 1222279. The next prime is 1222307. The reversal of 1222288 is 8822221.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781 + ... + 1747.

It is an arithmetic number, because the mean of its divisors is an integer number (120032).

2^1222288 is an apocalyptic number.

It is an amenable number.

1222288 is a deficient number, since it is larger than the sum of its proper divisors (1178352).

1222288 is an equidigital number, since it uses as much as digits as its factorization.

1222288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1048 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

The square root of 1222288 is about 1105.5713455042. The cubic root of 1222288 is about 106.9197290062.

The spelling of 1222288 in words is "one million, two hundred twenty-two thousand, two hundred eighty-eight".