201221223 has 8 divisors (see below), whose sum is σ = 306622848. Its totient is φ = 114983544.

The previous prime is 201221219. The next prime is 201221243. The reversal of 201221223 is 322122102.

It is a happy number.

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

It is not a de Polignac number, because 201221223 - 2² = 201221219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221203) 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, 4790961 + ... + 4791002.

It is an arithmetic number, because the mean of its divisors is an integer number (38327856).

Almost surely, 2^201221223 is an apocalyptic number.

201221223 is a deficient number, since it is larger than the sum of its proper divisors (105401625).

201221223 is an equidigital number, since it uses as much as digits as its factorization.

201221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9581973.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 201221223 is about 14185.2466668719. The cubic root of 201221223 is about 585.9914257114.

Adding to 201221223 its reverse (322122102), we get a palindrome (523343325).

The spelling of 201221223 in words is "two hundred one million, two hundred twenty-one thousand, two hundred twenty-three".