1217222 has 4 divisors (see below), whose sum is σ = 1825836. Its totient is φ = 608610.

The previous prime is 1217219. The next prime is 1217233. The reversal of 1217222 is 2227121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2227121 = 13 ⋅171317.

It is a self number, because there is not a number n which added to its sum of digits gives 1217222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304304 + ... + 304307.

It is an arithmetic number, because the mean of its divisors is an integer number (456459).

2^1217222 is an apocalyptic number.

1217222 is a deficient number, since it is larger than the sum of its proper divisors (608614).

1217222 is an equidigital number, since it uses as much as digits as its factorization.

1217222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608613.

The product of its digits is 112, while the sum is 17.

The square root of 1217222 is about 1103.2778435190. The cubic root of 1217222 is about 106.7718082201.

The spelling of 1217222 in words is "one million, two hundred seventeen thousand, two hundred twenty-two".