1205217322255 has 16 divisors (see below), whose sum is σ = 1523662462080. Its totient is φ = 912658253472.

The previous prime is 1205217322237. The next prime is 1205217322271. The reversal of 1205217322255 is 5522237125021.

It is a cyclic number.

It is not a de Polignac number, because 1205217322255 - 2⁵ = 1205217322223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5231169 + ... + 5456698.

It is an arithmetic number, because the mean of its divisors is an integer number (95228903880).

Almost surely, 2^{1205217322255} is an apocalyptic number.

1205217322255 is a deficient number, since it is larger than the sum of its proper divisors (318445139825).

1205217322255 is a wasteful number, since it uses less digits than its factorization.

1205217322255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10689078.

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 1205217322255 in words is "one trillion, two hundred five billion, two hundred seventeen million, three hundred twenty-two thousand, two hundred fifty-five".