9183220221 has 16 divisors (see below), whose sum is σ = 14334784128. Its totient is φ = 5119564800.

The previous prime is 9183220187. The next prime is 9183220229. The reversal of 9183220221 is 1220223819.

It is not a de Polignac number, because 9183220221 - 2³³ = 593285629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9183220229) by changing a digit.

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, 5332020 + ... + 5333741.

It is an arithmetic number, because the mean of its divisors is an integer number (895924008).

Almost surely, 2^9183220221 is an apocalyptic number.

It is an amenable number.

9183220221 is a deficient number, since it is larger than the sum of its proper divisors (5151563907).

9183220221 is a wasteful number, since it uses less digits than its factorization.

9183220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10665812.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 9183220221 is about 95829.1199009988. The cubic root of 9183220221 is about 2094.1044180828.

The spelling of 9183220221 in words is "nine billion, one hundred eighty-three million, two hundred twenty thousand, two hundred twenty-one".