221982422 has 8 divisors (see below), whose sum is σ = 333064872. Its totient is φ = 110960800.

The previous prime is 221982419. The next prime is 221982437. The reversal of 221982422 is 224289122.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4604 + ... + 21567.

It is an arithmetic number, because the mean of its divisors is an integer number (41633109).

Almost surely, 2^221982422 is an apocalyptic number.

221982422 is a deficient number, since it is larger than the sum of its proper divisors (111082450).

221982422 is a wasteful number, since it uses less digits than its factorization.

221982422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30414.

The product of its digits is 9216, while the sum is 32.

The square root of 221982422 is about 14899.0745350173. The cubic root of 221982422 is about 605.4889129004.

The spelling of 221982422 in words is "two hundred twenty-one million, nine hundred eighty-two thousand, four hundred twenty-two".