20222020423 has 4 divisors (see below), whose sum is σ = 22060385928. Its totient is φ = 18383654920.

The previous prime is 20222020411. The next prime is 20222020433. The reversal of 20222020423 is 32402022202.

It is a happy number.

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-20222020423 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 20222020423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222020433) 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, 919182736 + ... + 919182757.

It is an arithmetic number, because the mean of its divisors is an integer number (5515096482).

Almost surely, 2^20222020423 is an apocalyptic number.

20222020423 is a deficient number, since it is larger than the sum of its proper divisors (1838365505).

20222020423 is a wasteful number, since it uses less digits than its factorization.

20222020423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838365504.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 20222020423 its reverse (32402022202), we get a palindrome (52624042625).

The spelling of 20222020423 in words is "twenty billion, two hundred twenty-two million, twenty thousand, four hundred twenty-three".