220201223 has 4 divisors (see below), whose sum is σ = 240219528. Its totient is φ = 200182920.

The previous prime is 220201213. The next prime is 220201243. The reversal of 220201223 is 322102022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220201223 is a prime.

It is a super-2 number, since 2×220201223² = 96977157221391458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220201198 and 220201207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220201213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10009136 + ... + 10009157.

It is an arithmetic number, because the mean of its divisors is an integer number (60054882).

Almost surely, 2^220201223 is an apocalyptic number.

220201223 is a deficient number, since it is larger than the sum of its proper divisors (20018305).

220201223 is a wasteful number, since it uses less digits than its factorization.

220201223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20018304.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 220201223 is about 14839.1786497771. The cubic root of 220201223 is about 603.8650698918.

Adding to 220201223 its reverse (322102022), we get a palindrome (542303245).

The spelling of 220201223 in words is "two hundred twenty million, two hundred one thousand, two hundred twenty-three".