20221423440203 has 4 divisors (see below), whose sum is σ = 20306031906720. Its totient is φ = 20136814973688.

The previous prime is 20221423440187. The next prime is 20221423440217. The reversal of 20221423440203 is 30204432412202.

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 20221423440203 - 2⁴ = 20221423440187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221423440263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42304232900 + ... + 42304233377.

It is an arithmetic number, because the mean of its divisors is an integer number (5076507976680).

Almost surely, 2^{20221423440203} is an apocalyptic number.

20221423440203 is a deficient number, since it is larger than the sum of its proper divisors (84608466517).

20221423440203 is an equidigital number, since it uses as much as digits as its factorization.

20221423440203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84608466516.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 20221423440203 its reverse (30204432412202), we get a palindrome (50425855852405).

The spelling of 20221423440203 in words is "twenty trillion, two hundred twenty-one billion, four hundred twenty-three million, four hundred forty thousand, two hundred three".