20443224220223 has 4 divisors (see below), whose sum is σ = 23363684823120. Its totient is φ = 17522763617328.

The previous prime is 20443224220219. The next prime is 20443224220229. The reversal of 20443224220223 is 32202242234402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20443224220223 - 2² = 20443224220219 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 20443224220223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20443224220229) 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, 1460230301438 + ... + 1460230301451.

It is an arithmetic number, because the mean of its divisors is an integer number (5840921205780).

Almost surely, 2^{20443224220223} is an apocalyptic number.

20443224220223 is a deficient number, since it is larger than the sum of its proper divisors (2920460602897).

20443224220223 is an equidigital number, since it uses as much as digits as its factorization.

20443224220223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920460602896.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 20443224220223 its reverse (32202242234402), we get a palindrome (52645466454625).

The spelling of 20443224220223 in words is "twenty trillion, four hundred forty-three billion, two hundred twenty-four million, two hundred twenty thousand, two hundred twenty-three".