20002223 has 4 divisors (see below), whose sum is σ = 20647488. Its totient is φ = 19356960.

The previous prime is 20002201. The next prime is 20002261. The reversal of 20002223 is 32220002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32220002 = 2 ⋅16110001.

It is a cyclic number.

It is not a de Polignac number, because 20002223 - 2⁶ = 20002159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002123) 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, 322586 + ... + 322647.

It is an arithmetic number, because the mean of its divisors is an integer number (5161872).

Almost surely, 2^20002223 is an apocalyptic number.

20002223 is a deficient number, since it is larger than the sum of its proper divisors (645265).

20002223 is an equidigital number, since it uses as much as digits as its factorization.

20002223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645264.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20002223 is about 4472.3844870494. The cubic root of 20002223 is about 271.4518182042.

Adding to 20002223 its reverse (32220002), we get a palindrome (52222225).

The spelling of 20002223 in words is "twenty million, two thousand, two hundred twenty-three".