20202220210000 has 100 divisors (see below), whose sum is σ = 48916640704932. Its totient is φ = 8080054528000.

The previous prime is 20202220209961. The next prime is 20202220210061. The reversal of 20202220210000 is 1202220202.

It can be written as a sum of positive squares in 10 ways, for example, as 9020579751184 + 11181640458816 = 3003428^2 + 3343896^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 101830902 + ... + 102029098.

Almost surely, 2^{20202220210000} is an apocalyptic number.

20202220210000 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 20202220210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24458320352466).

20202220210000 is an abundant number, since it is smaller than the sum of its proper divisors (28714420494932).

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

20202220210000 is a wasteful number, since it uses less digits than its factorization.

20202220210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208418 (or 208397 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20202220210000 its reverse (1202220202), we get a palindrome (20203422430202).

The spelling of 20202220210000 in words is "twenty trillion, two hundred two billion, two hundred twenty million, two hundred ten thousand".