221044412 has 6 divisors (see below), whose sum is σ = 386827728. Its totient is φ = 110522204.

The previous prime is 221044391. The next prime is 221044451. The reversal of 221044412 is 214440122.

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 as a sum of consecutive naturals, namely, 27630548 + ... + 27630555.

It is an arithmetic number, because the mean of its divisors is an integer number (64471288).

Almost surely, 2^221044412 is an apocalyptic number.

It is an amenable number.

221044412 is a deficient number, since it is larger than the sum of its proper divisors (165783316).

221044412 is a wasteful number, since it uses less digits than its factorization.

221044412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55261107 (or 55261105 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 221044412 is about 14867.5624094873. The cubic root of 221044412 is about 604.6348565036.

Adding to 221044412 its reverse (214440122), we get a palindrome (435484534).

The spelling of 221044412 in words is "two hundred twenty-one million, forty-four thousand, four hundred twelve".