221246264 has 16 divisors (see below), whose sum is σ = 415267800. Its totient is φ = 110508192.

The previous prime is 221246243. The next prime is 221246281. The reversal of 221246264 is 462642122.

221246264 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 5894 + ... + 21845.

Almost surely, 2^221246264 is an apocalyptic number.

It is an amenable number.

221246264 is a deficient number, since it is larger than the sum of its proper divisors (194021536).

221246264 is a wasteful number, since it uses less digits than its factorization.

221246264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28742 (or 28738 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 221246264 is about 14874.3491958472. The cubic root of 221246264 is about 604.8188461112.

Adding to 221246264 its reverse (462642122), we get a palindrome (683888386).

The spelling of 221246264 in words is "two hundred twenty-one million, two hundred forty-six thousand, two hundred sixty-four".