20100221110200 has 768 divisors, whose sum is σ = 78593255424000. Its totient is φ = 4128042240000.

The previous prime is 20100221110187. The next prime is 20100221110201. The reversal of 20100221110200 is 201112200102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100221110201) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2888374321 + ... + 2888381279.

It is an arithmetic number, because the mean of its divisors is an integer number (102334968000).

Almost surely, 2^{20100221110200} is an apocalyptic number.

20100221110200 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 20100221110200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39296627712000).

20100221110200 is an abundant number, since it is smaller than the sum of its proper divisors (58493034313800).

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

20100221110200 is a wasteful number, since it uses less digits than its factorization.

20100221110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716 (or 7707 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20100221110200 its reverse (201112200102), we get a palindrome (20301333310302).

The spelling of 20100221110200 in words is "twenty trillion, one hundred billion, two hundred twenty-one million, one hundred ten thousand, two hundred".