20100220200 has 384 divisors, whose sum is σ = 71995392000. Its totient is φ = 5148921600.

The previous prime is 20100220199. The next prime is 20100220201. The reversal of 20100220200 is 202200102.

It is an interprime number because it is at equal distance from previous prime (20100220199) and next prime (20100220201).

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

It is not an unprimeable number, because it can be changed into a prime (20100220201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27955441 + ... + 27956159.

It is an arithmetic number, because the mean of its divisors is an integer number (187488000).

Almost surely, 2^20100220200 is an apocalyptic number.

20100220200 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 20100220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35997696000).

20100220200 is an abundant number, since it is smaller than the sum of its proper divisors (51895171800).

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

20100220200 is a wasteful number, since it uses less digits than its factorization.

20100220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 927 counting only the distinct ones).

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

Adding to 20100220200 its reverse (202200102), we get a palindrome (20302420302).

The spelling of 20100220200 in words is "twenty billion, one hundred million, two hundred twenty thousand, two hundred".