1222866560 has 32 divisors (see below), whose sum is σ = 2923416900. Its totient is φ = 489146368.

The previous prime is 1222866523. The next prime is 1222866679. The reversal of 1222866560 is 656682221.

It can be written as a sum of positive squares in 2 ways, for example, as 1171829824 + 51036736 = 34232^2 + 7144^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954725 + ... + 956004.

Almost surely, 2^1222866560 is an apocalyptic number.

1222866560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222866560 is an abundant number, since it is smaller than the sum of its proper divisors (1700550340).

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

1222866560 is an equidigital number, since it uses as much as digits as its factorization.

1222866560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910748 (or 1910736 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1222866560 is about 34969.5090042740. The cubic root of 1222866560 is about 1069.3659620408.

It can be divided in two parts, 122 and 2866560, that added together give a palindrome (2866682).

The spelling of 1222866560 in words is "one billion, two hundred twenty-two million, eight hundred sixty-six thousand, five hundred sixty".