221469224 has 16 divisors (see below), whose sum is σ = 417902100. Its totient is φ = 110028672.

The previous prime is 221469203. The next prime is 221469233. The reversal of 221469224 is 422964122.

It can be written as a sum of positive squares in 2 ways, for example, as 201129124 + 20340100 = 14182^2 + 4510^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 86909 + ... + 89420.

Almost surely, 2^221469224 is an apocalyptic number.

It is an amenable number.

221469224 is a deficient number, since it is larger than the sum of its proper divisors (196432876).

221469224 is a wasteful number, since it uses less digits than its factorization.

221469224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176492 (or 176488 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 221469224 is about 14881.8420902790. The cubic root of 221469224 is about 605.0219457923.

The spelling of 221469224 in words is "two hundred twenty-one million, four hundred sixty-nine thousand, two hundred twenty-four".