20021100110200 has 144 divisors (see below), whose sum is σ = 54151391812320. Its totient is φ = 6864061800960.

The previous prime is 20021100110173. The next prime is 20021100110227. The reversal of 20021100110200 is 201100112002.

It is an interprime number because it is at equal distance from previous prime (20021100110173) and next prime (20021100110227).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 336080817 + ... + 336140383.

It is an arithmetic number, because the mean of its divisors is an integer number (376051332030).

Almost surely, 2^{20021100110200} is an apocalyptic number.

20021100110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021100110200 is an abundant number, since it is smaller than the sum of its proper divisors (34130291702120).

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

20021100110200 is a wasteful number, since it uses less digits than its factorization.

20021100110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93894 (or 93878 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20021100110200 its reverse (201100112002), we get a palindrome (20222200222202).

The spelling of 20021100110200 in words is "twenty trillion, twenty-one billion, one hundred million, one hundred ten thousand, two hundred".