220221886 has 4 divisors (see below), whose sum is σ = 330332832. Its totient is φ = 110110942.

The previous prime is 220221863. The next prime is 220221889. The reversal of 220221886 is 688122022.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221889) 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 as a sum of consecutive naturals, namely, 55055470 + ... + 55055473.

It is an arithmetic number, because the mean of its divisors is an integer number (82583208).

Almost surely, 2^220221886 is an apocalyptic number.

220221886 is a deficient number, since it is larger than the sum of its proper divisors (110110946).

220221886 is a wasteful number, since it uses less digits than its factorization.

220221886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110110945.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 220221886 is about 14839.8748647015. The cubic root of 220221886 is about 603.8839575763.

The spelling of 220221886 in words is "two hundred twenty million, two hundred twenty-one thousand, eight hundred eighty-six".