221482444 has 24 divisors (see below), whose sum is σ = 400555568. Its totient is φ = 107075520.

The previous prime is 221482427. The next prime is 221482447. The reversal of 221482444 is 444284122.

It is not an unprimeable number, because it can be changed into a prime (221482447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19534 + ... + 28714.

Almost surely, 2^221482444 is an apocalyptic number.

It is an amenable number.

221482444 is a deficient number, since it is larger than the sum of its proper divisors (179073124).

221482444 is a wasteful number, since it uses less digits than its factorization.

221482444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9385 (or 9383 counting only the distinct ones).

The product of its digits is 16384, while the sum is 31.

The square root of 221482444 is about 14882.2862490949. The cubic root of 221482444 is about 605.0339839299.

The spelling of 221482444 in words is "two hundred twenty-one million, four hundred eighty-two thousand, four hundred forty-four".