221366033 has 8 divisors (see below), whose sum is σ = 253169280. Its totient is φ = 189607680.

The previous prime is 221366023. The next prime is 221366039. The reversal of 221366033 is 330663122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221366033 - 2¹² = 221361937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221365993 and 221366011.

It is not an unprimeable number, because it can be changed into a prime (221366039) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 113 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (31646160).

Almost surely, 2^221366033 is an apocalyptic number.

It is an amenable number.

221366033 is a deficient number, since it is larger than the sum of its proper divisors (31803247).

221366033 is a wasteful number, since it uses less digits than its factorization.

221366033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22447.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 221366033 is about 14878.3746760189. The cubic root of 221366033 is about 604.9279635561.

The spelling of 221366033 in words is "two hundred twenty-one million, three hundred sixty-six thousand, thirty-three".