1222816327 has 4 divisors (see below), whose sum is σ = 1251253960. Its totient is φ = 1194378696.

The previous prime is 1222816319. The next prime is 1222816333. The reversal of 1222816327 is 7236182221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222816327 - 2³ = 1222816319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222816292 and 1222816301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222816337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14218752 + ... + 14218837.

It is an arithmetic number, because the mean of its divisors is an integer number (312813490).

Almost surely, 2^1222816327 is an apocalyptic number.

1222816327 is a deficient number, since it is larger than the sum of its proper divisors (28437633).

1222816327 is an equidigital number, since it uses as much as digits as its factorization.

1222816327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28437632.

The product of its digits is 16128, while the sum is 34.

The square root of 1222816327 is about 34968.7907569021. The cubic root of 1222816327 is about 1069.3513193432.

Adding to 1222816327 its reverse (7236182221), we get a palindrome (8458998548).

The spelling of 1222816327 in words is "one billion, two hundred twenty-two million, eight hundred sixteen thousand, three hundred twenty-seven".