20020000012200 has 144 divisors (see below), whose sum is σ = 67246644851100. Its totient is φ = 5337649382400.

The previous prime is 20020000012139. The next prime is 20020000012267. The reversal of 20020000012200 is 221000002002.

It can be written as a sum of positive squares in 6 ways, for example, as 8543800388484 + 11476199623716 = 2922978^2 + 3387654^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8412756 + ... + 10526844.

Almost surely, 2^{20020000012200} is an apocalyptic number.

20020000012200 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 20020000012200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33623322425550).

20020000012200 is an abundant number, since it is smaller than the sum of its proper divisors (47226644838900).

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

20020000012200 is a wasteful number, since it uses less digits than its factorization.

20020000012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119372 (or 2119360 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20020000012200 its reverse (221000002002), we get a palindrome (20241000014202).

The spelling of 20020000012200 in words is "twenty trillion, twenty billion, twelve thousand, two hundred".