20322221423 has 16 divisors (see below), whose sum is σ = 23335599360. Its totient is φ = 17336592000.

The previous prime is 20322221393. The next prime is 20322221449. The reversal of 20322221423 is 32412222302.

It is not a de Polignac number, because 20322221423 - 2⁸ = 20322221167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322221323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294823 + ... + 1310423.

It is an arithmetic number, because the mean of its divisors is an integer number (1458474960).

Almost surely, 2^20322221423 is an apocalyptic number.

20322221423 is a deficient number, since it is larger than the sum of its proper divisors (3013377937).

20322221423 is a wasteful number, since it uses less digits than its factorization.

20322221423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16478.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20322221423 its reverse (32412222302), we get a palindrome (52734443725).

The spelling of 20322221423 in words is "twenty billion, three hundred twenty-two million, two hundred twenty-one thousand, four hundred twenty-three".