210110020020021 has 96 divisors (see below), whose sum is σ = 321844157205120. Its totient is φ = 120891994560000.

The previous prime is 210110020019881. The next prime is 210110020020029. The reversal of 210110020020021 is 120020020011012.

It is not a de Polignac number, because 210110020020021 - 2¹⁷ = 210110019888949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210110020019979 and 210110020020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210110020020029) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 348827511 + ... + 349429323.

It is an arithmetic number, because the mean of its divisors is an integer number (3352543304220).

Almost surely, 2^{210110020020021} is an apocalyptic number.

It is an amenable number.

210110020020021 is a deficient number, since it is larger than the sum of its proper divisors (111734137185099).

210110020020021 is a wasteful number, since it uses less digits than its factorization.

210110020020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602099 (or 602068 counting only the distinct ones).

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

Adding to 210110020020021 its reverse (120020020011012), we get a palindrome (330130040031033).

Subtracting from 210110020020021 its reverse (120020020011012), we obtain a palindrome (90090000009009).

The spelling of 210110020020021 in words is "two hundred ten trillion, one hundred ten billion, twenty million, twenty thousand, twenty-one".