1317222 has 40 divisors (see below), whose sum is σ = 3031776. Its totient is φ = 427248.

The previous prime is 1317193. The next prime is 1317223. The reversal of 1317222 is 2227131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 3 + 1 + 7⁴ + 2¹² + 2¹⁸ + 2²⁰ .

It is a junction number, because it is equal to n+sod(n) for n = 1317195 and 1317204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7528 + ... + 7700.

2^1317222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1317222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515888).

1317222 is an abundant number, since it is smaller than the sum of its proper divisors (1714554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1317222 is a wasteful number, since it uses less digits than its factorization.

1317222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 225 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 1317222 is about 1147.7029232341. The cubic root of 1317222 is about 109.6191235034.

Subtracting 1317222 from its reverse (2227131), we obtain a palindrome (909909).

The spelling of 1317222 in words is "one million, three hundred seventeen thousand, two hundred twenty-two".