221669882 has 16 divisors (see below), whose sum is σ = 380687040. Its totient is φ = 94831008.

The previous prime is 221669873. The next prime is 221669887. The reversal of 221669882 is 288966122.

It is not an unprimeable number, because it can be changed into a prime (221669887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5948 + ... + 21879.

It is an arithmetic number, because the mean of its divisors is an integer number (23792940).

Almost surely, 2^221669882 is an apocalyptic number.

221669882 is a deficient number, since it is larger than the sum of its proper divisors (159017158).

221669882 is a wasteful number, since it uses less digits than its factorization.

221669882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28405.

The product of its digits is 165888, while the sum is 44.

The square root of 221669882 is about 14888.5822696454. The cubic root of 221669882 is about 605.2046135313.

The spelling of 221669882 in words is "two hundred twenty-one million, six hundred sixty-nine thousand, eight hundred eighty-two".