1220568117 has 8 divisors (see below), whose sum is σ = 1698181824. Its totient is φ = 778333248.

The previous prime is 1220568109. The next prime is 1220568131. The reversal of 1220568117 is 7118650221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220568117 - 2³ = 1220568109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220568137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8844628 + ... + 8844765.

It is an arithmetic number, because the mean of its divisors is an integer number (212272728).

Almost surely, 2^1220568117 is an apocalyptic number.

It is an amenable number.

1220568117 is a deficient number, since it is larger than the sum of its proper divisors (477613707).

1220568117 is a wasteful number, since it uses less digits than its factorization.

1220568117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17689419.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1220568117 is about 34936.6300177908. The cubic root of 1220568117 is about 1068.6955650398.

The spelling of 1220568117 in words is "one billion, two hundred twenty million, five hundred sixty-eight thousand, one hundred seventeen".