1222563320 has 64 divisors (see below), whose sum is σ = 3018371040. Its totient is φ = 441971200.

The previous prime is 1222563319. The next prime is 1222563359. The reversal of 1222563320 is 233652221.

It is a super-2 number, since 2×1222563320² = 2989322142818844800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222563320.

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, 68090 + ... + 84150.

Almost surely, 2^1222563320 is an apocalyptic number.

1222563320 is a gapful number since it is divisible by the number (10) 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 1222563320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509185520).

1222563320 is an abundant number, since it is smaller than the sum of its proper divisors (1795807720).

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

1222563320 is a wasteful number, since it uses less digits than its factorization.

1222563320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16256 (or 16252 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1222563320 is about 34965.1729582452. The cubic root of 1222563320 is about 1069.2775628231.

The spelling of 1222563320 in words is "one billion, two hundred twenty-two million, five hundred sixty-three thousand, three hundred twenty".