221667052 has 12 divisors (see below), whose sum is σ = 388047520. Its totient is φ = 110796336.

The previous prime is 221667013. The next prime is 221667067. The reversal of 221667052 is 250766122.

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, 7474 + ... + 22342.

Almost surely, 2^221667052 is an apocalyptic number.

It is an amenable number.

221667052 is a deficient number, since it is larger than the sum of its proper divisors (166380468).

221667052 is a wasteful number, since it uses less digits than its factorization.

221667052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18600 (or 18598 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 221667052 is about 14888.4872300714. The cubic root of 221667052 is about 605.2020380253.

The spelling of 221667052 in words is "two hundred twenty-one million, six hundred sixty-seven thousand, fifty-two".