1222716768 has 192 divisors, whose sum is σ = 4011194880. Its totient is φ = 317509632.

The previous prime is 1222716749. The next prime is 1222716779. The reversal of 1222716768 is 8676172221.

It is a Harshad number since it is a multiple of its sum of digits (42).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 584268 + ... + 586356.

It is an arithmetic number, because the mean of its divisors is an integer number (20891640).

Almost surely, 2^1222716768 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 1222716768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2005597440).

1222716768 is an abundant number, since it is smaller than the sum of its proper divisors (2788478112).

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

1222716768 is a wasteful number, since it uses less digits than its factorization.

1222716768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2181 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 1222716768 is about 34967.3671871361. The cubic root of 1222716768 is about 1069.3222971493.

Adding to 1222716768 its reverse (8676172221), we get a palindrome (9898888989).

The spelling of 1222716768 in words is "one billion, two hundred twenty-two million, seven hundred sixteen thousand, seven hundred sixty-eight".