201224423 has 4 divisors (see below), whose sum is σ = 201347520. Its totient is φ = 201101328.

The previous prime is 201224363. The next prime is 201224467. The reversal of 201224423 is 324422102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201224423 - 2¹⁶ = 201158887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201224395 and 201224404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201224123) 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, 59063 + ... + 62376.

It is an arithmetic number, because the mean of its divisors is an integer number (50336880).

Almost surely, 2^201224423 is an apocalyptic number.

201224423 is a deficient number, since it is larger than the sum of its proper divisors (123097).

201224423 is a wasteful number, since it uses less digits than its factorization.

201224423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123096.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 201224423 is about 14185.3594596683. The cubic root of 201224423 is about 585.9945320150.

Adding to 201224423 its reverse (324422102), we get a palindrome (525646525).

The spelling of 201224423 in words is "two hundred one million, two hundred twenty-four thousand, four hundred twenty-three".