210110012021 has 36 divisors (see below), whose sum is σ = 265255114500. Its totient is φ = 165867706368.

The previous prime is 210110012011. The next prime is 210110012033. The reversal of 210110012021 is 120210011012.

210110012021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 19254615121 + 190855396900 = 138761^2 + 436870^2 .

It is not a de Polignac number, because 210110012021 - 2⁶ = 210110011957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210110011993 and 210110012011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210110012011) 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 35 ways as a sum of consecutive naturals, for example, 3689915 + ... + 3746423.

It is an arithmetic number, because the mean of its divisors is an integer number (7368197625).

Almost surely, 2^210110012021 is an apocalyptic number.

It is an amenable number.

210110012021 is a deficient number, since it is larger than the sum of its proper divisors (55145102479).

210110012021 is a wasteful number, since it uses less digits than its factorization.

210110012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56998 (or 56978 counting only the distinct ones).

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

Adding to 210110012021 its reverse (120210011012), we get a palindrome (330320023033).

The spelling of 210110012021 in words is "two hundred ten billion, one hundred ten million, twelve thousand, twenty-one".