20000122200 has 144 divisors (see below), whose sum is σ = 67210631280. Its totient is φ = 5329908480.

The previous prime is 20000122183. The next prime is 20000122201. The reversal of 20000122200 is 222100002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000122201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4024117 + ... + 4029083.

It is an arithmetic number, because the mean of its divisors is an integer number (466740495).

Almost surely, 2^20000122200 is an apocalyptic number.

20000122200 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 20000122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33605315640).

20000122200 is an abundant number, since it is smaller than the sum of its proper divisors (47210509080).

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

20000122200 is a wasteful number, since it uses less digits than its factorization.

20000122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7226 (or 7214 counting only the distinct ones).

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

Adding to 20000122200 its reverse (222100002), we get a palindrome (20222222202).

The spelling of 20000122200 in words is "twenty billion, one hundred twenty-two thousand, two hundred".