1222416216 has 48 divisors (see below), whose sum is σ = 3783670800. Its totient is φ = 349261632.

The previous prime is 1222416203. The next prime is 1222416227. The reversal of 1222416216 is 6126142221.

1222416216 is a `hidden beast` number, since 1 + 222 + 416 + 21 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1222416216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1212211 + ... + 1213218.

It is an arithmetic number, because the mean of its divisors is an integer number (78826475).

Almost surely, 2^1222416216 is an apocalyptic number.

It is an amenable number.

1222416216 is an abundant number, since it is smaller than the sum of its proper divisors (2561254584).

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

1222416216 is a wasteful number, since it uses less digits than its factorization.

1222416216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425448 (or 2425441 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 1222416216 is about 34963.0693160655. The cubic root of 1222416216 is about 1069.2346744335.

Adding to 1222416216 its reverse (6126142221), we get a palindrome (7348558437).

The spelling of 1222416216 in words is "one billion, two hundred twenty-two million, four hundred sixteen thousand, two hundred sixteen".