221243033 has 8 divisors (see below), whose sum is σ = 241466016. Its totient is φ = 201038400.

The previous prime is 221243023. The next prime is 221243051. The reversal of 221243033 is 330342122.

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 221243033 - 2⁶ = 221242969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221242996 and 221243014.

It is not an unprimeable number, because it can be changed into a prime (221243023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 37313 + ... + 42833.

It is an arithmetic number, because the mean of its divisors is an integer number (30183252).

Almost surely, 2^221243033 is an apocalyptic number.

It is an amenable number.

221243033 is a deficient number, since it is larger than the sum of its proper divisors (20222983).

221243033 is a wasteful number, since it uses less digits than its factorization.

221243033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 221243033 is about 14874.2405856568. The cubic root of 221243033 is about 604.8159019120.

Adding to 221243033 its reverse (330342122), we get a palindrome (551585155).

The spelling of 221243033 in words is "two hundred twenty-one million, two hundred forty-three thousand, thirty-three".