233221109 has 4 divisors (see below), whose sum is σ = 254423040. Its totient is φ = 212019180.

The previous prime is 233221033. The next prime is 233221133. The reversal of 233221109 is 901122332.

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 a de Polignac number, because none of the positive numbers 2^k-233221109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233221189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10600949 + ... + 10600970.

It is an arithmetic number, because the mean of its divisors is an integer number (63605760).

Almost surely, 2^233221109 is an apocalyptic number.

It is an amenable number.

233221109 is a deficient number, since it is larger than the sum of its proper divisors (21201931).

233221109 is a wasteful number, since it uses less digits than its factorization.

233221109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21201930.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 233221109 is about 15271.5784711339. The cubic root of 233221109 is about 615.5395349041.

The spelling of 233221109 in words is "two hundred thirty-three million, two hundred twenty-one thousand, one hundred nine".