1222544336 has 80 divisors (see below), whose sum is σ = 2598208704. Its totient is φ = 553900032.

The previous prime is 1222544293. The next prime is 1222544353. The reversal of 1222544336 is 6334452221.

It is a super-2 number, since 2×1222544336² = 2989229306971361792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3627560 + ... + 3627896.

Almost surely, 2^1222544336 is an apocalyptic number.

1222544336 is a gapful number since it is divisible by the number (16) 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 1222544336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299104352).

1222544336 is an abundant number, since it is smaller than the sum of its proper divisors (1375664368).

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

1222544336 is a wasteful number, since it uses less digits than its factorization.

1222544336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 622 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 1222544336 is about 34964.9014870627. The cubic root of 1222544336 is about 1069.2720282030.

Adding to 1222544336 its reverse (6334452221), we get a palindrome (7556996557).

The spelling of 1222544336 in words is "one billion, two hundred twenty-two million, five hundred forty-four thousand, three hundred thirty-six".