20223205 has 4 divisors (see below), whose sum is σ = 24267852. Its totient is φ = 16178560.

The previous prime is 20223193. The next prime is 20223221. The reversal of 20223205 is 50232202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50232202 = 2 ⋅25116101.

It can be written as a sum of positive squares in 2 ways, for example, as 7219969 + 13003236 = 2687^2 + 3606^2 .

It is not a de Polignac number, because 20223205 - 2⁵ = 20223173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022316 + ... + 2022325.

It is an arithmetic number, because the mean of its divisors is an integer number (6066963).

Almost surely, 2^20223205 is an apocalyptic number.

It is an amenable number.

20223205 is a deficient number, since it is larger than the sum of its proper divisors (4044647).

20223205 is an equidigital number, since it uses as much as digits as its factorization.

20223205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044646.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20223205 is about 4497.0217922532. The cubic root of 20223205 is about 272.4478142639.

Adding to 20223205 its reverse (50232202), we get a palindrome (70455407).

The spelling of 20223205 in words is "twenty million, two hundred twenty-three thousand, two hundred five".