221123033 has 8 divisors (see below), whose sum is σ = 223819848. Its totient is φ = 218439424.

The previous prime is 221123017. The next prime is 221123047. The reversal of 221123033 is 330321122.

221123033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 61277584 + 159845449 = 7828^2 + 12643^2 .

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 221123033 - 2⁴ = 221123017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221123053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32735 + ... + 38907.

It is an arithmetic number, because the mean of its divisors is an integer number (27977481).

Almost surely, 2^221123033 is an apocalyptic number.

It is an amenable number.

221123033 is a deficient number, since it is larger than the sum of its proper divisors (2696815).

221123033 is a wasteful number, since it uses less digits than its factorization.

221123033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6603.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 221123033 is about 14870.2062191484. The cubic root of 221123033 is about 604.7065334451.

Adding to 221123033 its reverse (330321122), we get a palindrome (551444155).

The spelling of 221123033 in words is "two hundred twenty-one million, one hundred twenty-three thousand, thirty-three".