221223301 has 8 divisors (see below), whose sum is σ = 238453880. Its totient is φ = 204023232.

The previous prime is 221223293. The next prime is 221223307. The reversal of 221223301 is 103322122.

It can be written as a sum of positive squares in 4 ways, for example, as 34928100 + 186295201 = 5910^2 + 13649^2 .

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 221223301 - 2³ = 221223293 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 (221223307) 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, 8755 + ... + 22783.

It is an arithmetic number, because the mean of its divisors is an integer number (29806735).

Almost surely, 2^221223301 is an apocalyptic number.

It is an amenable number.

221223301 is a deficient number, since it is larger than the sum of its proper divisors (17230579).

221223301 is a wasteful number, since it uses less digits than its factorization.

221223301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15255.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 221223301 is about 14873.5772764994. The cubic root of 221223301 is about 604.7979208077.

Adding to 221223301 its reverse (103322122), we get a palindrome (324545423).

The spelling of 221223301 in words is "two hundred twenty-one million, two hundred twenty-three thousand, three hundred one".