20021313223 has 8 divisors (see below), whose sum is σ = 20109081168. Its totient is φ = 19933718784.

The previous prime is 20021313209. The next prime is 20021313269. The reversal of 20021313223 is 32231312002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20021313223 - 2²¹ = 20019216071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20021313223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021313293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190665 + ... + 276397.

It is an arithmetic number, because the mean of its divisors is an integer number (2513635146).

Almost surely, 2^20021313223 is an apocalyptic number.

20021313223 is a deficient number, since it is larger than the sum of its proper divisors (87767945).

20021313223 is an equidigital number, since it uses as much as digits as its factorization.

20021313223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86753.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20021313223 its reverse (32231312002), we get a palindrome (52252625225).

The spelling of 20021313223 in words is "twenty billion, twenty-one million, three hundred thirteen thousand, two hundred twenty-three".