20424424422 has 16 divisors (see below), whose sum is σ = 41365923840. Its totient is φ = 6721962312.

The previous prime is 20424424411. The next prime is 20424424429. The reversal of 20424424422 is 22442442402.

It is a happy number.

It is a super-2 number, since 2×20424424422² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20424424422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424424429) 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, 21544278 + ... + 21545225.

It is an arithmetic number, because the mean of its divisors is an integer number (2585370240).

Almost surely, 2^20424424422 is an apocalyptic number.

20424424422 is an abundant number, since it is smaller than the sum of its proper divisors (20941499418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20424424422 is a wasteful number, since it uses less digits than its factorization.

20424424422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43089587.

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 20424424422 its reverse (22442442402), we get a palindrome (42866866824).

The spelling of 20424424422 in words is "twenty billion, four hundred twenty-four million, four hundred twenty-four thousand, four hundred twenty-two".