2217228861 has 8 divisors (see below), whose sum is σ = 2985575904. Its totient is φ = 1463517200.

The previous prime is 2217228829. The next prime is 2217228869. The reversal of 2217228861 is 1688227122.

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 2217228861 - 2⁵ = 2217228829 is a prime.

It is a super-2 number, since 2×2217228861² = 9832207644102714642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217228869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3658491 + ... + 3659096.

It is an arithmetic number, because the mean of its divisors is an integer number (373196988).

Almost surely, 2^2217228861 is an apocalyptic number.

It is an amenable number.

2217228861 is a deficient number, since it is larger than the sum of its proper divisors (768347043).

2217228861 is a wasteful number, since it uses less digits than its factorization.

2217228861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7317691.

The product of its digits is 43008, while the sum is 39.

The square root of 2217228861 is about 47087.4597000093. The cubic root of 2217228861 is about 1303.9777299711.

The spelling of 2217228861 in words is "two billion, two hundred seventeen million, two hundred twenty-eight thousand, eight hundred sixty-one".