20202222211100 has 72 divisors (see below), whose sum is σ = 44916015743088. Its totient is φ = 7882397683200.

The previous prime is 20202222211037. The next prime is 20202222211121. The reversal of 20202222211100 is 111222220202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22866782 + ... + 23733818.

Almost surely, 2^{20202222211100} is an apocalyptic number.

20202222211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20202222211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22458007871544).

20202222211100 is an abundant number, since it is smaller than the sum of its proper divisors (24713793531988).

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

20202222211100 is a wasteful number, since it uses less digits than its factorization.

20202222211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872775 (or 872768 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20202222211100 its reverse (111222220202), we get a palindrome (20313444431302).

The spelling of 20202222211100 in words is "twenty trillion, two hundred two billion, two hundred twenty-two million, two hundred eleven thousand, one hundred".