221227329 has 8 divisors (see below), whose sum is σ = 302942080. Its totient is φ = 143498736.

The previous prime is 221227319. The next prime is 221227339. The reversal of 221227329 is 923722122.

221227329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221227319) and next prime (221227339).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221227329 - 2⁴ = 221227313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221227296 and 221227305.

It is not an unprimeable number, because it can be changed into a prime (221227309) 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, 996409 + ... + 996630.

It is an arithmetic number, because the mean of its divisors is an integer number (37867760).

Almost surely, 2^221227329 is an apocalyptic number.

It is an amenable number.

221227329 is a deficient number, since it is larger than the sum of its proper divisors (81714751).

221227329 is a wasteful number, since it uses less digits than its factorization.

221227329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993079.

The product of its digits is 6048, while the sum is 30.

The square root of 221227329 is about 14873.7126837922. The cubic root of 221227329 is about 604.8015914747.

The spelling of 221227329 in words is "two hundred twenty-one million, two hundred twenty-seven thousand, three hundred twenty-nine".