1222780255 has 16 divisors (see below), whose sum is σ = 1509615360. Its totient is φ = 950130432.

The previous prime is 1222780243. The next prime is 1222780261. The reversal of 1222780255 is 5520872221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222780255 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222780255.

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, 106851 + ... + 117739.

It is an arithmetic number, because the mean of its divisors is an integer number (94350960).

Almost surely, 2^1222780255 is an apocalyptic number.

1222780255 is a deficient number, since it is larger than the sum of its proper divisors (286835105).

1222780255 is a wasteful number, since it uses less digits than its factorization.

1222780255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11538.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 1222780255 is about 34968.2749789005. The cubic root of 1222780255 is about 1069.3408042671.

The spelling of 1222780255 in words is "one billion, two hundred twenty-two million, seven hundred eighty thousand, two hundred fifty-five".