210020010111 has 24 divisors (see below), whose sum is σ = 322271009424. Its totient is φ = 136598374080.

The previous prime is 210020010089. The next prime is 210020010119. The reversal of 210020010111 is 111010020012.

It is a happy number.

210020010111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210020010111 - 2⁹ = 210020009599 is a prime.

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 = 210020010093 and 210020010102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210020010119) 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, 10530036 + ... + 10549961.

It is an arithmetic number, because the mean of its divisors is an integer number (13427958726).

Almost surely, 2^210020010111 is an apocalyptic number.

210020010111 is a deficient number, since it is larger than the sum of its proper divisors (112250999313).

210020010111 is an equidigital number, since it uses as much as digits as its factorization.

210020010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21080053 (or 21080041 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 210020010111 its reverse (111010020012), we get a palindrome (321030030123).

Subtracting from 210020010111 its reverse (111010020012), we obtain a palindrome (99009990099).

The spelling of 210020010111 in words is "two hundred ten billion, twenty million, ten thousand, one hundred eleven".