201100210020 has 72 divisors (see below), whose sum is σ = 642109453440. Its totient is φ = 50804262720.

The previous prime is 201100210013. The next prime is 201100210021. The reversal of 201100210020 is 20012001102.

201100210020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 201100209984 and 201100210011.

It is not an unprimeable number, because it can be changed into a prime (201100210021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29397196 + ... + 29404035.

Almost surely, 2^201100210020 is an apocalyptic number.

201100210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201100210020 is an abundant number, since it is smaller than the sum of its proper divisors (441009243420).

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

201100210020 is a wasteful number, since it uses less digits than its factorization.

201100210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58801265 (or 58801260 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201100210020 its reverse (20012001102), we get a palindrome (221112211122).

The spelling of 201100210020 in words is "two hundred one billion, one hundred million, two hundred ten thousand, twenty".