2221255117 has 8 divisors (see below), whose sum is σ = 2239006392. Its totient is φ = 2203526400.

The previous prime is 2221255103. The next prime is 2221255123. The reversal of 2221255117 is 7115521222.

It can be written as a sum of positive squares in 4 ways, for example, as 458430921 + 1762824196 = 21411^2 + 41986^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2221255117 - 2¹⁵ = 2221222349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221255177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231067 + ... + 240487.

It is an arithmetic number, because the mean of its divisors is an integer number (279875799).

Almost surely, 2^2221255117 is an apocalyptic number.

It is an amenable number.

2221255117 is a deficient number, since it is larger than the sum of its proper divisors (17751275).

2221255117 is a wasteful number, since it uses less digits than its factorization.

2221255117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11279.

The product of its digits is 2800, while the sum is 28.

The square root of 2221255117 is about 47130.1932629180. The cubic root of 2221255117 is about 1304.7665484744.

Adding to 2221255117 its reverse (7115521222), we get a palindrome (9336776339).

The spelling of 2221255117 in words is "two billion, two hundred twenty-one million, two hundred fifty-five thousand, one hundred seventeen".