202220023 has 4 divisors (see below), whose sum is σ = 202799800. Its totient is φ = 201640248.

The previous prime is 202220009. The next prime is 202220027. The reversal of 202220023 is 320022202.

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-202220023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202219985 and 202220012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220027) 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, 289365 + ... + 290062.

It is an arithmetic number, because the mean of its divisors is an integer number (50699950).

Almost surely, 2^202220023 is an apocalyptic number.

202220023 is a deficient number, since it is larger than the sum of its proper divisors (579777).

202220023 is an equidigital number, since it uses as much as digits as its factorization.

202220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579776.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 202220023 is about 14220.4086790781. The cubic root of 202220023 is about 586.9593860691.

Adding to 202220023 its reverse (320022202), we get a palindrome (522242225).

The spelling of 202220023 in words is "two hundred two million, two hundred twenty thousand, twenty-three".