20430243222 has 32 divisors (see below), whose sum is σ = 41745452544. Its totient is φ = 6662695200.

The previous prime is 20430243209. The next prime is 20430243283. The reversal of 20430243222 is 22234203402.

It is a happy number.

It is a super-2 number, since 2×20430243222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20430243192 and 20430243201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837072 + ... + 861132.

It is an arithmetic number, because the mean of its divisors is an integer number (1304545392).

Almost surely, 2^20430243222 is an apocalyptic number.

20430243222 is an abundant number, since it is smaller than the sum of its proper divisors (21315209322).

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

20430243222 is a wasteful number, since it uses less digits than its factorization.

20430243222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27124.

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

Adding to 20430243222 its reverse (22234203402), we get a palindrome (42664446624).

The spelling of 20430243222 in words is "twenty billion, four hundred thirty million, two hundred forty-three thousand, two hundred twenty-two".