210111102020 has 24 divisors (see below), whose sum is σ = 441440458368. Its totient is φ = 84004984800.

The previous prime is 210111102017. The next prime is 210111102043. The reversal of 210111102020 is 20201111012.

210111102020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 210111101992 and 210111102010.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2422316 + ... + 2507555.

It is an arithmetic number, because the mean of its divisors is an integer number (18393352432).

Almost surely, 2^210111102020 is an apocalyptic number.

210111102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210111102020 is an abundant number, since it is smaller than the sum of its proper divisors (231329356348).

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

210111102020 is a wasteful number, since it uses less digits than its factorization.

210111102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932011 (or 4932009 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210111102020 its reverse (20201111012), we get a palindrome (230312213032).

The spelling of 210111102020 in words is "two hundred ten billion, one hundred eleven million, one hundred two thousand, twenty".