221230033 has 4 divisors (see below), whose sum is σ = 221950960. Its totient is φ = 220509108.

The previous prime is 221230021. The next prime is 221230057. The reversal of 221230033 is 330032122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221230033 - 2⁵ = 221230001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221229989 and 221230016.

It is not an unprimeable number, because it can be changed into a prime (221230013) 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 3 ways as a sum of consecutive naturals, for example, 360003 + ... + 360616.

It is an arithmetic number, because the mean of its divisors is an integer number (55487740).

Almost surely, 2^221230033 is an apocalyptic number.

It is an amenable number.

221230033 is a deficient number, since it is larger than the sum of its proper divisors (720927).

221230033 is an equidigital number, since it uses as much as digits as its factorization.

221230033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720926.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 221230033 is about 14873.8035821373. The cubic root of 221230033 is about 604.8040555718.

Adding to 221230033 its reverse (330032122), we get a palindrome (551262155).

The spelling of 221230033 in words is "two hundred twenty-one million, two hundred thirty thousand, thirty-three".