221231301 has 8 divisors (see below), whose sum is σ = 295268064. Its totient is φ = 147341040.

The previous prime is 221231293. The next prime is 221231321. The reversal of 221231301 is 103132122.

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

It is not a de Polignac number, because 221231301 - 2³ = 221231293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221231321) 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, 33051 + ... + 39176.

It is an arithmetic number, because the mean of its divisors is an integer number (36908508).

Almost surely, 2^221231301 is an apocalyptic number.

It is an amenable number.

221231301 is a deficient number, since it is larger than the sum of its proper divisors (74036763).

221231301 is a wasteful number, since it uses less digits than its factorization.

221231301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73251.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 221231301 is about 14873.8462073534. The cubic root of 221231301 is about 604.8052110660.

Adding to 221231301 its reverse (103132122), we get a palindrome (324363423).

The spelling of 221231301 in words is "two hundred twenty-one million, two hundred thirty-one thousand, three hundred one".