221234033 has 4 divisors (see below), whose sum is σ = 230852928. Its totient is φ = 211615140.

The previous prime is 221234023. The next prime is 221234047. The reversal of 221234033 is 330432122.

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 221234033 - 2⁴ = 221234017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221233996 and 221234014.

It is not an unprimeable number, because it can be changed into a prime (221234003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4809413 + ... + 4809458.

It is an arithmetic number, because the mean of its divisors is an integer number (57713232).

Almost surely, 2^221234033 is an apocalyptic number.

221234033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221234033 is a deficient number, since it is larger than the sum of its proper divisors (9618895).

221234033 is an equidigital number, since it uses as much as digits as its factorization.

221234033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9618894.

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

The square root of 221234033 is about 14873.9380461262. The cubic root of 221234033 is about 604.8077006490.

Adding to 221234033 its reverse (330432122), we get a palindrome (551666155).

The spelling of 221234033 in words is "two hundred twenty-one million, two hundred thirty-four thousand, thirty-three".