1223382216 has 128 divisors (see below), whose sum is σ = 3585312000. Its totient is φ = 347719680.

The previous prime is 1223382211. The next prime is 1223382217. The reversal of 1223382216 is 6122833221.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (1223382211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2905686 + ... + 2906106.

It is an arithmetic number, because the mean of its divisors is an integer number (28010250).

Almost surely, 2^1223382216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223382216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792656000).

1223382216 is an abundant number, since it is smaller than the sum of its proper divisors (2361929784).

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

1223382216 is a wasteful number, since it uses less digits than its factorization.

1223382216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804 (or 786 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 1223382216 is about 34976.8811645635. The cubic root of 1223382216 is about 1069.5162503069.

It can be divided in two parts, 12233 and 82216, that added together give a palindrome (94449).

The spelling of 1223382216 in words is "one billion, two hundred twenty-three million, three hundred eighty-two thousand, two hundred sixteen".