1222356 has 12 divisors (see below), whose sum is σ = 2852192. Its totient is φ = 407448.

The previous prime is 1222307. The next prime is 1222373. The reversal of 1222356 is 6532221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 10.

It is a congruent number.

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, 50920 + ... + 50943.

2^1222356 is an apocalyptic number.

It is an amenable number.

1222356 is an abundant number, since it is smaller than the sum of its proper divisors (1629836).

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

1222356 is a wasteful number, since it uses less digits than its factorization.

1222356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101870 (or 101868 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 1222356 is about 1105.6020984061. The cubic root of 1222356 is about 106.9217117377.

Adding to 1222356 its reverse (6532221), we get a palindrome (7754577).

The spelling of 1222356 in words is "one million, two hundred twenty-two thousand, three hundred fifty-six".