20423430222 has 16 divisors (see below), whose sum is σ = 43988926800. Its totient is φ = 6284132352.

The previous prime is 20423430217. The next prime is 20423430259. The reversal of 20423430222 is 22203432402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20423430192 and 20423430201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130919347 + ... + 130919502.

It is an arithmetic number, because the mean of its divisors is an integer number (2749307925).

Almost surely, 2^20423430222 is an apocalyptic number.

20423430222 is an abundant number, since it is smaller than the sum of its proper divisors (23565496578).

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

20423430222 is a wasteful number, since it uses less digits than its factorization.

20423430222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261838867.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20423430222 its reverse (22203432402), we get a palindrome (42626862624).

The spelling of 20423430222 in words is "twenty billion, four hundred twenty-three million, four hundred thirty thousand, two hundred twenty-two".