20420204222 has 8 divisors (see below), whose sum is σ = 33414879672. Its totient is φ = 9281911000.

The previous prime is 20420204213. The next prime is 20420204227. The reversal of 20420204222 is 22240202402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20420204194 and 20420204203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420204227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 464095529 + ... + 464095572.

It is an arithmetic number, because the mean of its divisors is an integer number (4176859959).

Almost surely, 2^20420204222 is an apocalyptic number.

20420204222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20420204222 is a deficient number, since it is larger than the sum of its proper divisors (12994675450).

20420204222 is a wasteful number, since it uses less digits than its factorization.

20420204222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928191114.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20420204222 its reverse (22240202402), we get a palindrome (42660406624).

The spelling of 20420204222 in words is "twenty billion, four hundred twenty million, two hundred four thousand, two hundred twenty-two".