20305206222 has 32 divisors (see below), whose sum is σ = 46584460800. Its totient is φ = 5779917408.

The previous prime is 20305206221. The next prime is 20305206241. The reversal of 20305206222 is 22260250302.

It is a junction number, because it is equal to n+sod(n) for n = 20305206192 and 20305206201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20305206221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887322 + ... + 909917.

It is an arithmetic number, because the mean of its divisors is an integer number (1455764400).

Almost surely, 2^20305206222 is an apocalyptic number.

20305206222 is an abundant number, since it is smaller than the sum of its proper divisors (26279254578).

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

20305206222 is a wasteful number, since it uses less digits than its factorization.

20305206222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797520.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20305206222 its reverse (22260250302), we get a palindrome (42565456524).

The spelling of 20305206222 in words is "twenty billion, three hundred five million, two hundred six thousand, two hundred twenty-two".