1222163568 has 60 divisors (see below), whose sum is σ = 3441410440. Its totient is φ = 404880768.

The previous prime is 1222163567. The next prime is 1222163599. The reversal of 1222163568 is 8653612221.

1222163568 is a `hidden beast` number, since 12 + 2 + 2 + 1 + 635 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222163567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2563 + ... + 49506.

Almost surely, 2^1222163568 is an apocalyptic number.

1222163568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222163568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1720705220).

1222163568 is an abundant number, since it is smaller than the sum of its proper divisors (2219246872).

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

1222163568 is a wasteful number, since it uses less digits than its factorization.

1222163568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52246 (or 52237 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 1222163568 is about 34959.4560598417. The cubic root of 1222163568 is about 1069.1610065040.

Adding to 1222163568 its reverse (8653612221), we get a palindrome (9875775789).

The spelling of 1222163568 in words is "one billion, two hundred twenty-two million, one hundred sixty-three thousand, five hundred sixty-eight".